The Strategic Science of Dad Jokes
Dad jokes are intentionally uncool. People tell them not just to be funny, but specifically to force a painful groan from their audience as a form of playful bonding.
While these puns are often dismissed as lame, they serve a unique social purpose. By telling a joke that is obviously bad, the speaker creates a lighthearted atmosphere that lowers expectations and invites collective amusement. The reaction is the entire goal of the performance. It turns awkward silence into a shared moment of humorous embarrassment between friends or family members.
Source: Dad joke