Quote Originally Posted by Throbert McGee View Post
снимать/снять -- many idiomatic meanings, here including: 1. "to photograph someone" and 2. "to 'take out' or 'pick off' someone with a bullet, as a sniper does" (at least, I think that's the intended wordplay here -- I might be misunderstanding it, because this verb has such a large number of figurative/idiomatic senses)
There’s nothing to do with snipers in the joke.
The boy had in mind the meaning ‘to take a picture’ of course. His parents could understand that as ‘to take hanged men out from the gallows’.