"What's dumber than an [ethnic]" joke

What's the biggest moth in the world? A mammoth!

whats a shitzu?
a zoo with no animals

What's another name for a push-up bra?
False advertisement

Whats green and can jump a mile a minute? A frog with hiccups!

What's sicker than sick? masturbating with your grandma's ashes under your foreskin....