The tag implication #62974 bird_up -> meme is pending approval.

Reason: Bird up is a reference to the Eric Andre show. The joke was thrust back into popularity with the publishing of Terminal Montage's Monster Hunter animations, in which bird up remains a consistently appearing joke.
As such this tag should be considered a meme.

Isn't it an actual term used in badminton, or something like that? Or maybe golf. I don't sports good.

It's also the name of a Garten of Banban meme created by the Youtuber Uhyeah.