Hahahaha yah I've heard that one before. A classic.

A guy comes home from work early to find his wife in bed with another man. Enraged, the husband drags the other man into the garage and tightens the man's dick in his vice. The husband then pulls out a saw. The other man freaks out "Are you going to saw off my dicks?!?" "No." Replies the husband. "You are. I'm going to burn down the garage"