My GF always does that with me... after I cum in her mouth and she swallows everything down, she continues nursing at my cock, sucking gently and milking me with her soft, warm hands... She manages to milk out a surprising amount of cum after my "orgasm!" A man isn't really drained just by ejaculating. There is still a lot of cum in there to be milked out! Eventually I am empty and too sensitive and I have to ask her to stop, but she just stops sucking and keeps my cock in her mouth while I go soft. I never even have to wipe or clean because her sucking mouth leaves me nice and clean and empty! No drips after that treatment!!