Diddy Done Decked a Pissed off Fan ... Allegedly! [TMZ TV]

2/4/2015 6:00 PM PST

Diddy's Super Bowl party was a total blast in the face ... for one fan who claims the music/clothing/vokda mogul punched him.

Now, that fan was cursing in Diddy's face  -- which is why some people think Diddy just did what had to be done. Ya dig?