Banned for time machines are presently being worked on.  Or just teleportation even. That would be cool.  Oh and watch out for those flies.

Banned for Jeff Goldblaum (or however you spell his name) and flies and time machines and flies and...

Banned because I went looking for a few Rammstein songs and clicked on Rihanna by mistake...

Banned for above and beyond the call of duty.  Or one of D'ohs moments....   

Rihanna is one powerful looking woman. Best to change the channel? 

Banned because she may be powerful-looking (at least compared to the other starlets), but her music is just powerfully bad.

EDIT: Just realized you may have meant "powerful" as in "attractive", not "powerful" as in "strong". I doubt the latter, and not being interested in women I can't really judge the former. Her music is, however, still powerfully bad.

Banned because she's powerful in all ways.  Not a big fan of the music either. Not awful, just not my taste. But she's one impressive woman.

Better than Beyoncé in my books.  

Banned because a lot of things are better than Beyonce. Malaria, for example.

Banned for measly things

banned for encouraging him

  Banned for not gonna do it. "Wouldn't be prudent".... 

banned for snickering about it

Banned for snacking on it.

banned for not going for the really good snacks

Banned for where's the yummy

Banned for not PizzaO's again?  That'll rot your brain.

Banned for burnt brain cells

Banned for it took a long time to get there, might as well enjoy the BBQ. 

Banned for waiting in the BB queue.

banned for using a BB

Banned for Arnold wouldn't approve... nope

banned because I do approve

Banned for approval is flighty

Banned cuz I won't tell Arnie...    your so brave.

banned for making the assumption of bravery

Banned for shaking in boots