Hey, I remember that fanart. Have seen it a long time ago. Didn't find it funny to be honest though. Only reason it stuck on my mind was because of how absurd it was hahaThere was this little joke comic where Pikachu "accidentally" kisses Ash in front of Serena and she brushes it off as a cute thing...until Pikachu flashes a very malevolent smirk that makes her reconsider.
Okay, so that wasn't official, but still...you have to wonder who Ash likes the most really.