A woman has bugs in her home, she wants to find a bug hunter to get rid of them. She calls a man who does bug hunting, he comes to her house and says: "I am a bug hunter, you called me. Where's your laptop?"
Woman confused as she is asks the man: "Why do you need a laptop to hunt and get rid of the bugs?"

"Well how else am I going to debug those bloody programs you wrote?"

Note: I promise I made this up, if anyone else already posted this, I wasn't aware.