Kurt and Puck have a baby boy. For some reason their baby boy ain't too close to Puck, and acts like he's a stranger. So when Puck is about to give up on trying to bond with his son, Kurt comes up with using junk food; something he'd only use out of desperation. He makes Puck open a bag of Cheetos, and that captures his son's attention.
I think it was MPREG. Dont judge me please.. :)
ETA: There ya go, mod. Fixed it and sorry. :)