I looked, and looked, and looked, and looked, and looked, and looked, and looked, and looked, and looked, and apparently we don't have a thread like this (the closest is a "Least Favorite Kermit Moment"), but this isn't being limited to Kermit, this is for least favorite sketch from SST in general.
For me, one that stands out is a little boy (a little pink AM) looking for his lost letter V, and receiving lackluster help from a man (blue AM) he passes by. Finally, the boy finds his V (Vivie) in a fence that's composed of V-shaped elements by calling out to his V, who responds, living the man alone and confused and remarking "That's VERY strange..." as if that's the punchline to the sketch.
For me, one that stands out is a little boy (a little pink AM) looking for his lost letter V, and receiving lackluster help from a man (blue AM) he passes by. Finally, the boy finds his V (Vivie) in a fence that's composed of V-shaped elements by calling out to his V, who responds, living the man alone and confused and remarking "That's VERY strange..." as if that's the punchline to the sketch.