A challenge for sure: how to ever-so-gently address the super-sensitive topic of embarrassing, ego-crushing erectile dysfunction within an online banner ad. This would be my approach:
HEY PAL, DOES YOUR DICK SUCK?
(I guarantee you it would get more click-throughs than the above thing. Look at the look on the woman’s face (click image)—she looks like she’s watching a sparrow eating birdseed on the windowsill.).