http://www.thinkgeek.com/caffeine/drinks/2818/
That is what bawls officially is, but in Chuckies case it is probably a mispelling of the other type (that reside between legs)
Bawls
Chuck-a-duck tried to indoctrinate with Bawls in "Run like Hell" too.
He likes Bawls, I guess. *smirk*
On a related side-tangent...
Dare I say... EEK?
Where has my precious fallout gone. *sobs*