Only one; However, it takes an entire emergency ward to get it back out again.
Six. One to change it, one to take pictures and four to make t-shirts for the event.
To get to the other side
A 100 dollar bill you pervert!
In his briefcase!
Because he couldn't float! (Insert laughter here)
Helllllllloooooo (insert your mother's/wife's/sister's/grandmother's name here.)