i would try to watch her in secret for a lil bit then slowly walk up to her giving her incourgament then drop to me kneesand give her a tongue bath, or offer her my cock into her mouth ;)
i stay down there until my jaw hurts! just last week i was going down on a lady in her front yard, the only reason we stopped was coz her son came out with his gf, saying good bye to her ;)