Because his uncles are aunts.
She couldn't figure out who the other mother was.
Papayas See, you're confused right?
The man replies: it's back there, I'm just going to get the water! (This is a true story, my uncle really said this)
I can understand why an Uncle would be in there.
Girl: My Aunt Boy: No it's an elephant. Girl: You obviously haven't met my Aunt