Rhydon- son.
Rhydon? - mum.
RHYDON DEEZ NUTS! - son.
Jeez, ur like ur father in bed- mum.
XD
Alright, listen up, buttercup. The joke goes like this: "Rhydon" sounds like "Ride on." The son sets up a "deez nuts" joke, and the mom roasts him with a sex joke. As a bear, I know that you are not very bright, but even you can understand it. Keep trying, champ!