Yes when I masturbate my penis. With my spare hand between my legs I finger my ass.

At university we had parties where everyone got nude. We did all kinds of kinky things. There was a room where we all danced nude; cocks swinging, tits bouncing. We boys would put on girls' panties and if the owner wanted them back she would have to come and take them off us. The girls would ask us boys to show them some jerking off so we stood there naked and masturbated seeing who could spurt furthest. The girls even asked us to show them some boy on boy where one boy hand jobs another boy off or bends over so another cums into his ass crack. We usually ended up in bed with a girl. They were great times.
I did it lots of times at my boys school usually in secluded spots in the school grounds or in the gym changing room. About 3 or 4 of us would wank simultaneously showing off our wanking technique. Sometimes in a boys bedroom. That was fun. Also later at wild university student parties where we all got naked and the girls wanted to watch us boys wanking. Masturbating with an appreciative audience is much more fun.
Take your erect cock in your hand, then instead of tugging or stroking your shaft rub your cock head rhythmically against the bedclothes. It leads to a long slow rise to your cum. Best performed in bed on all fours with your cock hanging down and something under you to catch your spurt. I discovered this method because my bed rattled and creaked if I wanked the "normal" way on my back tugging my cock but this other way didn't cause any noise.
Once in my twenties I was touring Europe with another guy from university. We were both straight. One night the only place we found we could lodge for the night only had a double bed. It was that or sleep rough so we took it. It was a stifling hot night and we both slept naked with just a sheet over us. After previous frustrating nights in youth hostel shared dormitories and being temptedby verg sexy prostitutes in bars we both had massive erections. We couldn't help but poke and rub each other with our hard up dicks in the narrow bed. Eventually we both gave in and had a good hard naked wank in bed next to each other. That relieved our tensions and certainly helped us to sleep.
With mutual simultaneous hand jobbing I often find that the boy who cums first suddenly loses interest in tugging the other boys cock when his orgasm rises and the boy who comes second ends up wanking his own cock to cum. One of my best experiences was when I was at my all boys school and I got together in a wank boy friends bedroom for cock play when his parents were away. We knelt naked on his bed facing each other with our cock heads touching and wankec each other. He came first spurting over me then I jacked my load over his cock and belly.
I was late teens. It was at my boys school sports swimming class. I had to share a changing cubicle with another boy. When we got naked together we were both hard up erect and had a feel of each other's cocks. After the lesson we had time together. He gave me a hand job then he asked me to suck him off. I didn't want to seem shy. He sat with his legs wide on the bench with his erect cock straight up. I knelt between his legs. I knew what to do from porn. I licked his cock all over then took just its head into my mouth and massaged it with my lips and tongue. That drove him wild. Then I slid my lips up and down his cock and over its head till he came in my mouth. I still remember how his cock got really hard in my mouth and how he rammed his hips and pubic hair up against my face when he spurted. He said I'd done really well. I preferred giving hand jobs to sucking cock but I was glad I had done it.
I was late teens. It was at my boys school sports swimming class. I had to share a changing cubicle with another boy. When we got naked together we were both hard up erect and had a feel of each other's cocks. After the lesson we had time together. He gave me a hand job then he asked me to suck him off. I didn't want to seem shy. He sat with his legs wide on the bench with his erect cock straight up. I knelt between his legs. I knew what to do from porn. I licked his cock all over then took just its head into my mouth and massaged it with my lips and tongue. That drove him wild. Then I slid my lips up and down his cock and over its head till he came in my mouth. He said I'd done really well. I preferred giving hand jobs to sucking cock but I was glad I had done it.
Of course I do! My favourite position for solo masturbation is kneeling with my legs wide or on all fours. I like the heavy feel of my swinging cock. Best of all is masturbating with my wife when my spare hand can play with her naked body and she can stroke my balls, thighs, groins and anus as I beat my meat.