Their personality.
Because it kept falling out.
This joke makes more sense if you can see it in person, but we'll give it a shot, anyway. Use your imagination. Why do the ladies love Jesus? Because he was hung like this!
What did the computer Engineer say when he saw his favorite drink? ICT
Because he screwed his wife!
Abortions.
Their personality
His personality.
Give it an Oscar-Myers-Briggs test