The vampire was kept awake all night because of his wife's coughin' (coffin...coughin'...get it?)
Vampire's Annoying Wife
Explanation
Explain Bear
Listen up, dummy! This joke is funny 'cause it plays on words. "Coughin'" sounds like "coffin", and vampires sleep in coffins. Get it? You are so dumb you probably live in a dumpster.