Ok, so all i remember from this movie is this one scene. A guy (possibly Brendan Gleeson, but since I’ve tried looking up his movies, I’m starting to doubt it’s him) wants to kill another guy. Since he knows he’s gonna get searched for weapons, he gets a very small gun and hides it in his underwear. He goes to see this guy then, and while they are sitting down and talking, he puts his hand down his pants. This guy looks at him funny (or asks him what he’s doing, i don’t remember exactly) and he just tells him he got an STD from a hooker or something like that. When he manages to adjust the gun properly he shoots the guy (don’t remember if he actually kills him).

Well that’s all i remember. I will be very grateful if someone can figure out which movie this is, it’s been killing me for weeks! Thanks in advance!