I lived in a party house in a previous life, here are a few signs to check:

•the people playing drinking games sound like kids on GTA online instead of people having a chill time. •any dude showing up shirtless in 40° weather. Regardless of whether or not he's on something, he's gonna start shit with somebody. •DDs actively partaking. •The host is physically fighting, creating drama, or the highest/drunkest person at the party. •the host doesn't know the dealer/that there's a dealer present. •glass shattering. •ANY weapon. •gender & sexuality demographics/ratios. Gtfo before you hit 4:1 in any situation where you could find yourself inebriated & outnumbered.