Yo momma jokes are a cornerstone of modern comedy and roast culture ... here are X of the best yo momma jokes that are completely clean… unlike yo dirty, ugly, elderly momma.

Belichick’s segment was essentially clean, with his first joke acknowledging his negative portrayal in the “Dynasty” series. “I’m so honored to be here for the roast of Tom Brady on Netf ...

Ann Coulter isn't funny, as she proved during Monday night's at Comedy Central Roast of Rob Lowe when all of her jokes fell flat. Maybe she would've gotten more laughs if she'd used the script ...