When you give a girl a creampie (or your the one who got the creampie) and instead of cleaning up she puts her clothes on and leaves for the day without draining it from her pussy.
When she gets home you check if it’s still there and if it’s still there let it stay and if it’s not then you can go at it again. ;)
Harley: “I am doing a Creampie Walk right now Katie and I’m so horny right now.”
Katie: “Is it really that good? Maybe I’ll try it with Tom later.”