Thanksgiving pants 

Pants that are worn in anticipation of eating a huge meal (i.e. Thanksgiving dinner). These pants usually boast an elastic waist, to allow some give for that third helping of sweet potato pie.

The girls and I are going to a buffet for dinner, so I'm wearing my Thanksgiving pants.

Thanksgiving pants by Contessa Vanessa September 16, 2008

Thanksgiving pants 

When you shit your pants after thanksgiving giving dinner

I think I have thanksgiving pants

Thanksgiving pants by Bj.noggy February 15, 2017