The trope keeps getting used across the wiki as something like Lame Pun Reaction
, basically someone lampshading that no one laughed at their joke. However, the trope is "funny characters are unpopular (or at least not as popular as they would be in real life)."
Honestly, I question its tropeworthiness myself. The description is a bit weird ("While in real life genuinely funny and charming people are social darlings, in TV land they're more seen as annoying losers.
The prime examples would have to be Chandler Bing and Xander Harris, who — in their early seasons, at least — were funnier than just about anyone in real life, yet got nothing back but eye-rolling and sighs. You wonder why they hang out with these people." sounds like it was written by someone who considers themselves hilarious but not getting the love and attention they deserve.