Grandma's Attic
Referring to a woman's anus. Child word of Uhaul, referring to a vagina.
I heard you got to ride the uhaul last night. Did you get any time in Grandma's attic?!?
Cleaned Grandma's Attic
Fellatio resulting in ejaculate overflowing through the recipient's nose, when the recipient is older than their partner
Last night while hooking up with a cougar I came so much that I Cleaned Grandma's Attic. If you know what I mean.