When you're smoking weed and you take a hit and you hold in 100% of the smoke from the inhale, exhaling *zero* smoke from the hit. Done in order to get maximum effect from the weed. Requires great skill and is worthy of respect from other smokers.
"Yo I was ripping a B with Joey Fatone the other day and he was totally zeroing every time ... insane!"
Beta loser from the favelas who somehow never misses unless it’s the correct answer on a school test, zeqoi is also known for having an obsession with the idea of an absent father