Sun's out, guns out

EyeSeeYou Sun's out, guns out

That is no idiom that I know. It would be helpful if you included some text when you ask about 'idioms'—since you don't know whether it is indeed one.

EyeSeeYouthe sun's out bit clearly refers to summer

Not necessarily. It could be after a rainstorm.

I've never heard this idiom.

It is a slang expression that refers to a mans biceps/upper arms, his 'guns'. So the expression means 'it's sunny, wear a short-sleeved shirt to show off your muscles to the girls'.

Vic Z 'it's sunny, wear a short-sleeved shirt to show off your muscles to the girls'.

I guess I haven't been to the men's locker room enough.

Thanks.

I saw this as a tag-line of the sequel film 21 Jump Street, a comedy. The poster showed the protagonists in the typical American beach parties.

Why isn't it an idiom, if I may ask...?

EyeSeeYouWhy isn't it an idiom, if I may ask...?

It says literally what it means. Yes, you have to know that 'guns' is used metaphorically for biceps, but other than that, there's nothing that indicates "idiom".

Here's a real idiom: "kick the bucket" It means "die", and yet there is absolutely nothing in it that has to do with dying.

CJ

"Guns" means biceps. So, on a sunny day someone might say this to mean to wear a very short sleeved shirt so your biceps are visible.