The effect on ones penis after prolonged use of lubricant during masturbation, whereby the penis gets chapped; the way lips get chapped from too much sun.
"Man, I'd like to wrench my warty chap-dick down her throat."
"It appears my member has acquired a state of chapness, chap-dick if you will."
the sexual act of putting chapstick on one's penis and then having himself or a partner sucking it off.
Kory: Dude I totally made that Katie chick give me strawberry chap-dick
Jake: She liked the taste of your strawberry chap dick