A man walks into a post office and sees a middle-aged, balding man at the counter. He is methodically placing "Love" stamps on bright pink envelopes covered in hearts. He then takes out a perfume bottle and sprays them all.
Overcome by curiosity, the observer approaches and asks what he is doing. The man replies, "I'm sending out 1,000 Valentine's cards signed, 'Guess who?'"
"But why?" asks the observer.
"I'm a divorce lawyer."