A dance where everyone on the floor (or off the floor) is grinding
Dude are you going to the dance? You should, because I heard its going to be a grindfest.
Having a party where everyone is grinding
. Guys on guys, girls on girls, guys on girls, doesn't matter. Everyone is fucking grinding til the break of fucking dawn
Alex: Damn girl that was some grind fest you had goin on there!
You: Indeed it was! that was the sexiest grind fest ever!
At most dances, there's a big grindfest in the middle of the dance floor, where all the girls are back to back in a big circle grinding
asses together, while all the guys make a bigger circle around them, jumping up and down and acting like frat
Suzy: Did you go to the dance?
Suzy: I didn't see you.
Annie: I was in the middle..in the grindfest.
a high school dance
"Were you at the homecoming dance last night?"
"Yeah, what a grind fest"