Because his uncles are aunts.
Because all of it's Uncles were Aunts(Ants)
You put it in a bowl and tell it go to a corner!
They disguise themselves as uncles!
I don't know but that reminds me of a similar joke my uncle used to tell...
I can understand why an Uncle would be in there.
Mom: Well son, your aunt really loves flowers! Son: Mom, what do you love Mom: Richard, stop asking so many questions!