It looks like the cult show did...and we have the video proof!
For those of you who may not remember, Police Squad was the hysterical, detective parody show created by the Zucker Brothers and Jim Abrams...the masterminds behind Airplane.
The comedy team later turned Police Squad (which ran in 1982 and was canceled after only six, amazing episodes) into the Naked Gun film series.
Anyway, here's a montage of Police Squad epilogues...and as you can see, they seem to be doing the Mannequin Challenge 30-plus years before it became a thing!
Check it out!
- East Side Dave