Squat brat
The act of squatting on the toilet and taking a shit.
Hey bro I gotta go take a squat brat.
Squat a brat
The act of taking a shite after eating a brat. The ratio of eating brats to squatting brats is a 1 to 1 ratio.
First you eat a brat, then you squat a brat! I ate 2 brats, so now I must go squat 2 brats.