This design is just fun with male humor. The species Phallus Impudicus is named for its resemblance to male anatomy, but with just a small touch of license, I have elevated them to the absurd. One might say it's a distinctly impudent design. 

This design looks great on all sorts of merchandise, from shirts to bedspreads to pillows and shower curtains. Here are some examples from my Redbubble store (click on any to visit the store):