Look, it was a tense moment. Shane O'Mac just re-emerged on Raw and was pushing his father's buttons. His father wanted to emphasize that he was going to have his son take a beating at WrestleMania. So, he accidentally threw an f-bomb into his sentence. And honestly, it made the moment ten times cooler.
The moment was censored on Raw, but in the unedited footage above, you can clearly hear him drop the f-bomb and you can hear the crowd instantly react.
Side note: if anyone reading this was in attendance last night, give yourself a pat on the back. The audience was electric and made Raw feel like a major event.