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.
Mexican Jew Lizard
An epiphet supposedly created online and popularized allegedly in WWII online games, alongside other nonsensical insults and racial slurs. Was
“What are you, some kind of Mexican Jew Lizard?”