An epiphet supposedly created online and popularized allegedly in WWII online games, alongside other nonsensical insults and racial slurs. Was spoken of specifically in a 2003 Penny Arcade strip concerning issues with WWII online group plays, and confirmed as being an actual insult from those days by Jerry Holkins in the creator commentary of the PA book Birds are Weird.
"What are you, some kind of Mexican Jew Lizard?"
'Being ugly' is, in some places (like Texas), a term used to describe the actions of someone who is acting rudely/unpleasantly to others.
While 'being ugly' is a common phrasing, there are other variants, like 'acting ugly', 'are/were ugly', and so on.
"Grant, stop being ugly to your little sister and behave!"
"I can be a really ugly guy when I go without smoke break, man."
"Sorry about my mom acting so ugly to you during dad's funeral."
"S'alright. I acted pretty ugly to him while he was alive, so I understand why she'd do the same to me while she was grieving."