Mariah Carey and Nick Cannon's son likes to fight.

The 'America's Got Talent' presenter, who married the 43-year-old singer in 2009, said their two-year-old twins, Moroccan and Monroe, have very different personalities and predicted their son is a going to be very ''tough''.

Speaking to UsMagazine.com, Nick said: ''They're almost three. They're reading now. They're musical. My son likes to fight . . . that makes me happy. I gotta guy who's gonna be a tough dude.''

The 33-year-old star recently returned from a Christmas and New Year's holiday in Aspen, Colorado with his family, but claimed he never feels the need to take time off to relax.

He explained: ''It was wonderful. We do that every year. We go away and have a nice little winter wonderland.''

But he added: ''I tell everybody that my vocation is my vacation. It doesn't seem like work. Not like where you come home your feet hurt, you've been out in the hot sun . . . that's work. I get to get up and be creative.''

Nick, who recently said he ''instantly'' knew Mariah was the woman for him, revealed they still have a very steamy relationship after five years of marriage.

Asked how they keep their love alive, he said: ''Lots of sex.''