whodatis 

An inquisitive approach of "who is that?" "who are you" or some such similar question.

Whodatis? That's just my baby daddy.

whodatis by La Fawn Davis June 30, 2003

Whodatsie 

The picture on your phone of someone that was unintentionally taken.

I've had the hardest time with the camera's hair trigger on my new iphone 8. I've got another whodatsie on it.

Whodatsie by Your Eminence November 4, 2014