why boys easily get mad when they are being asked by their girlfriend?

If he's a hypocritical, inconsiderate, condescending, stuck-up bad boy, dump him or reject him and tell other girls to avoid him!

Being asked 'what', honey? A guy should not get mad at his girlfriend, PERIOD, unless she is deceiving him somehow. But to get asked a question, what could that question BE? If you ask the same thing over and over, I could see him getting a little upset, but before you get MAD, you ask your girlfriend to stop asking that same question.