WordNet sense 1 (a state of disorder involving group violence):

rioting

WordNet sense 2 (a joke that seems extremely funny):

howler, scream, wow, sidesplitter, thigh-slapper, belly laugh

WordNet sense 3 (engage in boisterous, drunken merrymaking):

carouse, roister

WordNet sense 4 (a public act of violence by an unruly mob):

public violence

WordNet sense 5 (a wild gathering involving excessive drinking and promiscuity):

bacchanal, bacchanalia, debauch, debauchery, orgy, saturnalia, drunken revelry