The elated, dreamlike, starry-eyed, mushy heart state one is in the morning/day after hot ass, down & dirty, cum 17 times, can't walk, can't sit, can't think of anything else, amazing sex.
My girl was trying to talk to me about her new dude but i was so sprungover from last night i wasn't hearing a thing!
A sex-hangover. The feeling of aching and overall exhaustion that comes the day after a particularly vigourous sexual escapade.
The feeling that makes you think: "Damn, am I supposed to stretch before and after shagging?!"
Highest risk of a shangover comes after the first sex you've gotten in a while. This is because: 1, you tend to put more effort in, and 2, you're out of condition.