^banned for not responding properly when hailed by an alien vessel who's pilots are observing our earth and who'd like to make contact.
"Sorry babe, but that's not on our playlist" is somewhat inappropriate.

Banned for being inappropriate or pointing out something which is inappropriate, which I just did, but I'm banning you for it because you made me do it.

Banned for giving in to peer pressure.

^ banned for pressuring your peers

Banned because that wasn't me. My peers are only subjected to the pressure of the hadal zone, which starts at 11km beneath the surface of the ocean.

Banned because you're not an aquatic mammal.

Banned for making assumptions.

^ Banned for not knowing the proper response to - "I'm going to put my quantum harmonizer in your photonic resonation chamber!"

Banned because I do know the proper response.

The proper response is to do the following...
1. very overtly stand in front of the prior user
2. turn your back on him
3. sit down with your back still turned to him

This will let the prior user know that he is being ignored thus banned from your presence, which is something you would know if you were a cat.

Therefore J Lo is banned for being a trash panda.

Banned for forgetting the fourth step in that proper response, which is to fold both arms across the chest to appear disgruntled.

Banned because gruntled is an actual word.

^banned for Extreme Supermaning (standing firm and holding out your hand) in front of a truck. Critters never ever should try that.

Banned for not checking whether the truck is moving or not. That's what everyone should always check first.

Banned because if the truck contains artillery then Vinry already checked whether it was moving.