If you add 2 to 2, you come up with 5, not 22. 

@IRonMaN NOT exactly related, but it reminds me of this:

A Roman soldier walked inside a restaurant.  The hostess asked, "How many in your party?"

Soldier raised two fingers (like how we signal victory) and said:

Five.

Okay, he actually said "Quinque", but Julius Caesar isn't coming to town and who would brush up his Latin?