What's a WTC ?

In this case it's not the World Trade Center in New York, which was a seven-building complex in Lower Manhattan that was destroyed in the September 11, 2001 attacks.

Neither is it the Well-Tempered Clavier, which is a set of keyboard works by Johann Sebastian Bach (German title Das wohltemperierte Clavier, retaining the "C" rather than the "K" per 18th-century spelling) and William Coles' book.

It's not WebLogic Tuxedo Connector, a software component to provide interoperability between WebLogic Server and Tuxedo.

If you thought is was Western Technical College you'd be wrong again just like the West Toronto Collegiate which is also wrong. Perhaps you're thinking of the Japanese Anime Murder Mystery Novel When They Cry (Higurashi no Naku Koro ni), but to no avail. Wilderness Travel Course = Wrong! and as for the Windmill Theatre Company, in Victoria, Australia - Not a chance

Working tax credit, Nice idea but still not there and the World Taiwanese Congress is a bazillion miles away.

Now, the World Triathlon Corporation is an endurance shaped thing, which is close, but no cigar and the Wu-Tang Clan are an American hip-hop group, so that can't be it.

An internet slang acronym for What the crap?????.... could be......

Ah, but of course, those in the know will be eminently aware that WTC actually refers to the Wednesday or Thursday Club. Duhhh!