Part of Alameda Slim's disguise involves a pair of glasses that, when worn, make Slim completely unrecognizable to his idiot Mooks, even if they watch him putting on the glasses. Then, during his Villain Song, one of the Mooks puts on the glasses, and the other two immediately freak out because they don't recognize him.
Slim's reaction to one of the Willie brothers referring to his yodeling as "singing".
My singing? Birds sing. Saloon gals sing. Little bitty snot-nosed children sing. I yodel. And yodeling is an art!!!
"I gave up clown college for this?"
Maggie's reaction to Grace singing "She'll be Comin' Round the Mountain".
She'd better hurry up around that mountain, 'cause I can't take this much longer.