I though it was a smiley face. I used it everywhere. Now I'm banned from lots of forums. =(

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

What some people might consider a horse smiley is actually a depiction of a man's reproductive organs, & when used incorrectly, it leads to a lot of confusion & discomfort.

An extremely small penis or chode, with an enormous head but small balls

A penis
other examples:
8==D
8===D
8====D

Pretty much the universal symbol for dick. But it can be ok through parents if you say it means smile.

A delighted gentleman with sunglasses on his head.

That, or a very unhappy gentleman who isn't very well-endowed.