Seat soup
The pool of sweat that is left from someone being in a certain spot for a period of time
"Dude it was so hot in that class. I think I left some seat soup in my chair."
"Bro, if you lifted here last, you have to wipe off your seat soup for the next person."
"Bro, if you lifted here last, you have to wipe off your seat soup for the next person."