To act goofy,
annoying, unserious, weird, or deliberately irritating for no real reason. Can also mean trolling, messing around, doing too much, or just behaving in a way that feels vaguely “tac.”
Basically, if somebody is goofing, trolling,
annoying you, moving weird, being unserious, or just doing some bullshit, they’re tacing.
Examples:
“Why are you tacing around rn?”
“Stop being tac.”
“He been on some tac shit all
day.”
“You’re actually tacing me right now.”
“That whole situation was tac.”
“Bro is a tac.”