Because D-shells are too big and B-shells are too small.
Chernobyl fallout.
A: So they know where to stop shaving.
They picked random letters out of a hat. C.... eh? N... eh? D....eh?
D--Dos
They ordered ziti instead of shells.
Shell.
They're masters in Arielle combat
She went out with the tide.
Cause she was too big for B- shells! (my 6 year old niece likes to tell this joke)
Because D shells are too big and B shells are too small.
