A buddy of mine was in the 20th Special Forces Group (headquarters in Birmingham but this guy was from Mississippi).dumb prank
Every year US soldiers have to get tested for HIV because some countries do not want HIV+ foreigners in their country. You give the blood sample, ther Army tests is and mails "You are HIV-" letter home.
The company clerk intercepted one guy's letter, swapped it out for an HIV+ letter (Get it? Funny, right?) and mailed it to the guy's address. It arrived just after the guy had left for a weekend National Guard drill. The wife opened the letter.
Turns out this guy had a couple of girlfriends on the side, and his wife suspected him and knew the other women, so she called the suspected girlfriends and told them (in the sense of "I'm so distraught my husband has HIV. Please console me.") When the other women responded not with "Oh, dear, that's terrible!" but, instead, responded with, "That SOB! I'm going kill him!" the wife knew he had been playing the field.
When this guy got home from drill, his wife was burning his clothes in the front yard and had filed for divorce.
Funny.