If you play with fire, you get burned proverb informal
If you do something dangerous or risky, you will get hurt.
He may get injured when enacting the stunts of movie superheroes in real life. He should know that if you play with fire, you get burned.
It's wrong of you to join the gang. If you play with fire, you get burnt.
It's no surprise that Jack was imprisoned after selling drugs. If you play with fire, you get burned.
Beat someone up
We should be careful in doing everything instead of doing something risky.
To make one feel extremely upset, hurt or offended
If you fall for someone's trick the first time then they are at fault.
Are you going to mess with me again? Fool me once, shame on you; fool me twice, shame on me.