edit: nevermind...
OP delivers.
Ten. (Shame this one doesn't work too well for reddit - the funniest part of this joke is the third punchline enjoying people struggle to understand what the hell you're talking about.)
I shot him Why did the second kid fall out I stapled them together Why did the third kid fall out Peer pressure
You have only one second to guess the answer. No pressure.
No Self Esteem!