On Sunday's Keeping Up With the Kardashians, Kourtney ponders moving to the Big Apple with Scott Disick, father of her 9-month-old son Mason.

Disick, 27, a NY native, demands they go.

"100 percent we're moving to New York!" he says at his birthday bash (watch clip, above).

Then, before blowing out the candles on his cake, he declares, "I know it's bad luck to tell your wish to everybody ... but my wish would be to get the hell away from her family in California and get to New York where my family is."

Watch a new episode of Keeping Up With the Kardashians Sunday at 10 p.m. (EST) on E!

Tell Us: Should Kourtney move to NYC with Scott?