L Stand Blumpkin - Getting a blumpkin from someone who's doing a L stand means

Getting a blumpkin from someone who's doing a L stand means you're the one who got left hanging.

You: 'We're going to the mall.' Him: 'Nope. I'm doing a L stand.'

You ask your friend to come to the game. He says: 'Nah, I'm doing a L stand.'

You call your crush. He says: 'I can't talk. I'm doing a L stand.'