When a male is playing sport/exercising (particularly when it is cold), and the penis and scrotum contract leaving one less endowed
John: "Man your penis is looking a bit small"
Harry: "What do you expect, I've just played 90 minutes and it's January, I've got a sports willy!"
Harry: "What do you expect, I've just played 90 minutes and it's January, I've got a sports willy!"
by MF.AC February 20, 2015