UFC rising star Paddy Pimblett is roasting Ilia Topuria -- a.k.a. "Mr. Hand Sanitizer" -- after the rival fighters came to blows in a hotel ... after engaging in a social media tiff a few months back.
TMZ Sports talked to 27-year-old Paddy "The Baddy" one day after he got into it with 25-year-old Topuria ... and it's safe to say the scuffle didn't do anything to squash the beef.
Pimblett -- 17-3 as a pro -- says he was just minding his own business, "warming me eggs up" in the hotel kitchen when Ilia -- "that little bitch ass" as Paddy refers to him -- approached him in an aggressive manner.