AuH2O is a cute way to say Goldwater. Periodic table, gold is Au and Water, H2O
I read many years ago that AUH2O was his vanity license plate. Dunno if it’s true.
https://www.thegatewaypundit.com/2023/07/oh-my-marjorie-taylor-greene-holds-up-sexually/
hahaha!!!!