buy trouble(redirected from buys trouble)
To do something that is likely to cause problems later. That kid isn't bullying you, so if you tattle on him to the teacher, you're definitely buying trouble.
Fig. to encourage trouble; to bring on trouble. (As if certain acts would pay for or cause difficulties that would have to be suffered through.) I don't want to buy trouble. I have enough already. Saying something insulting to him is just buying trouble.