Paulina Gretzky's Son Is Adorably Terrified Of Santa Claus (Cute Video)

Here's Paulina Gretzky's son,Tatum, proving that not every kid is looking forward to a visit from ol' St. Nick ... hilariously and adorably panicking at the sight of Santa Claus.

Paulina posted the videos of Tatum onto her Instagram stories ... because parents for some reason always find it amusing when their kids are terrified (c'mon, it's funny).

No word on whether Tatum was naughty or nice this year ... but it's clear he and Santa have a little trust building to do.