Can I easily combine images of two people's faces? Maybe find out what their kids would look like as a gag?

Question

I want to use two pictures and easily combine them to determine what the combination would look like. Thought it would be a cute marriage gag gift for a friend. It would be nice if I didn't have to manually do this in photoshop

Answer 1

Photoshop was my first answer.

A morphing program may do what you want, not fully sure.