I don't think that the smurf portrayed in the Darth Vader + Film + Smurf = Everything banner was actually known as gay smurf (not that there's anything wrong with that, mind you). While slightly effeminate and extremely self-centred, I believe his official title was Vanity Smurf. Most smurfs are pre-sexual; besides, I'd vote for Hefty Smurf as the gay one (overcompensation is a dead give-away).

_{Aside: My knowledge of Smurf Lore is way too detailed for my own comfort.}