Guys don't like to admit it, but they're FRAGILE creatures.  If you don't believe us, check out this list of 11 things you can do to damage a guy's ego.  If that's your thing . . .

1.  Open the door for him.

2.  Tell him something he did was "irresponsible."

3.  Beat him at a video game.

4.  Fix something that's broken without asking him to.

5.  Be funnier.

6.  Buy him clothes that are too big for him.

7.  Get him girly-smelling lotion.

8.  Pay for dinner when you're out with friends.

9.  Be more successful.

10.  Propose.