Come in Handy 

An English slang expression meaning that something will be useful at some time in the future. It is an expression used by hoarders to justify the retention of all sorts of useless junk.

Don’t chuck it out, it may come in handy.

Come in Handy by AKACroatalin October 9, 2016

come in handy 

when something could be useful

a hammer right now would come in handy!

come in handy by BrokenBrotato August 2, 2020

come in handy 

adj.: One prone to premature ejaculation upon the first physical contact with their sex-partner.

Monica: I think I'm gonna hook up with Bill tonight.

Hillary: You might want to skip the foreplay; he can be a little bit come in handy.

come in handy by dballs15 June 29, 2009