I can't say your mom's a cow because that sounds too close to being an actual insult.

SO YOUR MOMS A GRANDMOTHER CLOCK, SHE TICK TOCKS ALL DAY LONG

Your mom's a hat. I wear her all the time.

You're a hat!
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FAT HAT

Your a cow! cowboycowboycowboycowboycowboycowboycowboycowboyCO WBOY!

THERE ARE NO COWS. THATS WHAT MAKES A COWBOY A COWBOY.
THE HAT IS A COWBOY HAT IF A COWBOY IS WEARING IT, STUPID!

Fuck that! He's wearing a cowboy hat, and that makes him a COWBOY!

He's a Pioneer, not a damn Cowboy!