Dad Joke

You speak a punchy punny phrase or bad joke to a single creautre that you can see causing them the mental anguish of being subjected to...a dad joke.  The target must succeede on a Wisdom saving throw or become Charmed for the duration.  The target creature is Charmed until they either save out of it or the spell ends.  The charmed creature can't attack the caster with any harmful abilities or magical effects with the exception of making an unarmed melee attack.  When making an unarmed strike against the caster the charmed creature gains advantage on their unarmed attacks until the spell ends.  The caster also gains advantage on all abilitiy checks to interact socially with the target creature.    Creatures with an intelegence of 3 or lower are not affected.  At the end of each of the target's turns, the creature can make a Wisdom saving throw ending the spell on a success.  

Examples:

Where do you find a dead town crier?  Wherever they were burried.  
Beholder?  I barley even know her!