Mind his own business.

sounds like Johnny was trying to cheat on his

Johnny should mind his own and get on with his test.

Grab Sally's test and see if his answers are the same as hers...

Johnny should mind his own business.

Get some answers😂

Johnny should mind how own f#@$ing business 🙄

Snitches get stiches Johnny...

Shut up. Just focus on his own test.

Sally can cheat her way through school, but eventually life will catch up.

Brutally murder sally with the pencil