How did "Bugs" get his nickname?

Bugs got a cockroach in his ear one night.... his nickname came from the fact that he tried to convince Bud that he wasn't the one screaming when they took the roach out.... he claimed it was the cockroach.

"Well, bugs ain't so different from us as you'd think, soon as he saw those tweezers coming at him he was pretty terrified and commenced to screaming, screaming in English too, not some bug language like you'd expect from a roach."
"Yeah? What'd he say?"
"All he kept yelling was, 'My legs! My legs! Why have they done this to my legs?' " That's the true story about how Bugs started getting called Bugs.