Reasons I am called Dum Dum

Today:

1. Walked away from the cashier without getting my stuff that I already paid for.
   
2. Thought the French flag was the Polish flag upside-down
3. Said "Our group is great because we can beat off eachother."*
   
4. Transfer my CD case from Jason's car to Pauls, while forgetting ALL MY STUFF.
   
5. "Oh, Right. Only your tongue has taste buds"

Note: *Meant to say (bounce [ideas] off eachother)