Actually? The poster is probably effective.
The Arabs would HATE IT if an ugly woman touched them like that, it would be a deep wound to their "manhood". It might trigger the idea that maybe they shouldn't do it to others... but not likely.

It's probably more effective than the ones reminding them it's not appropriate to touch girls & boys, to them those are just 'instruction manuals'.
"no no square" = lolz.