People that "blow" their horns the instant the light changes to green!! (and I live in NYC)
When people fold the cover of a paperback. (do people still read physical books? LOL)
People that fold their $ bills more than once or roll them up.
People that bite their finger nails.
Back seat drivers!
This new "sagging" craze.
Pants not being hemmed and thus dragging on the ground.
To name a few.