Congrats, Grandpa Jim!!!

Jim Carrey is going to be a grandfather!

The actor’s rocker daughter Jane Carrey, 21, is expecting her first child with longtime boyfriend Alex Santana or Nitro, as fans of his band, Blood Money, know him as.

Oh yeah, this kid is going to have a weird name! No question!

But Jim seems pretty happy about the whole thing: “I am very excited. Jane is going to be a great mom.”

Well then, congrats! Not too many celebu-grandkiddies running around. You might just start a new trend!

[Image via WENN.]