The act of deeply inserting one's penis into any orifice so that the genitalia (ie: ballz, sack, nuts) touch the opening one is penetrating... ie: anus, vagina, mouth
When your are having sexual intercourse with a women and your penis is so deep that the ballz are pushed up against the lips of the pussy to the point where your ballz are on the verge of also going in.
Mike uses a COVID mask to hold up his balz and keep them safe... That's the one Mike lends Rob that faithful day in October when Rob forgot his mask and graciously wore inhaling Mike’s teen spirt. Balls beep biatch ;)
