bob: *quarter squatting 225*  frank: hey bob why don't you stop being a pussy and start squating ass to the grass *squats 315 atg for ten reps*
"the proper way to [squat]
"bob: *quarter squatting 225*  frank: hey bob why don't you stop being a pussy and start squating ass to the grass *squats 315 atg for ten reps*" What is the definition of "ass to the grass"?