lapalco
n.
A word to indicate one's desire to leave a party.

v. 
The act of leaving a party or other social gathering.

adj.
The point at which a party or social gathering has ceased to be exciting.
"Bob's calling lapalco on this party. Let's leave."

"It's time to lapalco this party"

"The hosts are taking up collection for a new keg; this party is lapalco."