YOU KNOW WHO'D GIVE A BETTER CHRISTMAS GIFT? CLAIRE! ONLY INSTEAD OF LINGERIE, IT'S THE REAL DEAL: HERSELF! COME ON, LEON! UNWRAP YOUR GIFT AND ENJOY CHRISTMAS WITH US! FUCK YOUR PRESENT AND SHOOT YOUR CHRISTMAS CHEER INTO CLAIRE'S STOCKING! I WANT TO GIVE GIFTS TO NIECES AND NEPHEWS, NOT TO ALBERT WHISKERS!

I disagree.
This is simple a case of a running joke.
Yes, same punch line, but the punch itself comes in slightly different forms and angles, and sometimes it's subverted.
You might not like this running joke, which is fine, not all jokes will be funny to all. But I and a big majority agree that it's funny.