A swollen, chaffed or sore asshole that can only be achieved after a solid ass-pounding friday and saturday night. Most common in insecure drunk women, dope fiends, inmates and Justin Beiber fans.
Austin awoke that morning to find his asshole swollen and practically rubbed raw from all his guido buddies after a spectacular weekend of fist pumping and partying on the Shore, a textbook case of the sunday morning asshole.
when a girl has fallen asleep after a night of vigorous sex, the man pulls back the covers, takes a hot steamy dump at the end of the bed, puts on his clothes, and leaves. She wakes up in the morning, sniffs around, pulls off the covers and: SURPRISE!!!
Friend A: You think that ugly girl you slept with last night is going to call you?
Friend B: Nah, I gave her a Sunday Morning Surprise, she'llnever want to see me again.
When, after meeting and/or hooking up with someone on a Saturday night and exchanging numbers, you receive a text from them the nextmorning.
John: Hey man, have you talked to that chick who you hooked up with last night?
Dave: Yeah, she sent me a Sunday morning text, asking me how my hangover was.