To me, clowns aren't funny. In fact, they're kinda scary. I've wondered where this started, and I think it goes back to the time I went to the circus and a clown killed my dad...
If you're in a war, instead of throwing a hand grenade at the enemy, throw one of those small pumpkins. Maybe it'll make everyone think how stupid war is, and while they are thinking, you can throw a real grenade at them...