Seriously, what in the fuck? They do that all the time and maybe it could be the setup for a good one liner, but do they do that? Hell no. They say that and then cut to actually showing the scene. It used to be only Peter early on I think, but now it has gotten to where just about any character can remember something, spawning a worthless scene.
Peter walks into a bathroom and sees a toilet. "Gee, this reminds me of the time that I took a shit." So then they can now show him back at home on a toilet, grunting and groaning while he squeezes out the next episode of the show. Not that we needed to see that though; we are already expecting something shitty.