I’m adding about 25 new exhibits to the Hall of Technical Documentation Weirdness. When the opportunity presents itself, I try to provide an amusing caption to go with an odd warning message or sign. Here’s a particularly dorky example.
I can’t think of anything remotely funny for this one:
The best I had was “The cast of Chariots of Fire is not permitted”, but that’s just pitiful. Derek Miller already suggested “No underwear modeling in this area”, which is pretty good.
Do they look like any celebrities? I’m imagining something like “Celebrity X and Celebrity Y should, under no circumstances, be permitted to breed”.
Surely the wisdom of crowds can do better?
DarrenBarefoot.com 
You’re in Massachusetts now.
No fit people beyond this point
or
Gym members barred
I don’t know about wisdom, but…
Do not “strike a pose”.
No dressing right.
XTreme Walking Around In Your Underwear.
Couples in underwear will be prosecuted
For debriefing only
You have no right to bare arms (or legs)
“Coloured people only”?
That last one’s good. How about a sharper version: “No whiteys”?
No “Rocky Horror Picture Show” Re-enactments Beyond This Point
Sears catalog model crossing?
I’m leaning toward “coloured people only”–it’s multi-layered.
What was this sign intended to mean?
Jason: It’s outside a cathedral in Italy, and is meant to indicate that you can’t go in wearing shorts, a short skirt, bare arms and so forth.
No transamerica zone.