pop a squat

verb2

1. •
   (slang) To crouch down.

   • Scotty, come here. Pop a squat right next to daddy. — 2002
2. •
   (slang) To urinate in a squatting position, especially in a public place.

   • Now, if I was here at my mother's house and someone was out in the yard popping a squat, I'd have to say something […] — 2004