The act of staring an a mans nether region in attempt to decipher the size of their junk.
Sarah, why are you staring at that man's crotch? Don't mind Sarah, she's just Dick gauging.
When you're fucking a girl in the pussy and you insert your dick into her ass just to ejaculate.
She actually let you do anal? No, young padawan, I was simply taking a load to the dump.