Ho Yay: The Stand Alone episode culminates in Burnie, Geoff and Joel all apparently falling in love with the Gus cardboard cutout, leading to an argument. Gus is revealed to have spent his time away from work creating cardboard cutouts of them also, and promptly throws off his shirt asking "Who wants to play strip poker?!".
Apparently, how Chris gets the dogs having sex in all of his photos in the Picture Perfect video involves peanut butter. That was Matt's. And he put it all back before Matt realized this and had the peanut butter for lunch.
Also, Gus breastfeeding Baby Gus. Doing it in front of Joel, Geoff and Matt. Who are all eating lunch.