A blonde walks into an electronics store and asks one of the staff, "Can I buy that TV please?" and the man replies "I don't serve blondes" so she left and bought a brunette wig. She then asks the same man, "Can I buy that TV please?" and he replies "I told you before I don't serve blondes." she says "How did you know it was me?!" and he replies "Because that's not a TV, it's a Microwave."