A penis that is the same size as a “pop can”, refers to a penis that is short but wide
I got a pop can dick! She’s short but wide, the girls can barely handle it!
Popping your can refers to the process in which a male throat fucks someone so hard, a small hole rips in their throat. Resembling a hole in a can.
I throat fucked this bitch so hard I popping your can.
To actually notice something or care about something
Bro you know I pop a can for you