An acronym of "Words Cannot Express The Hilarity But Acronyms Can."
An acronynm used by msn-users who are far too intelligent to use the more common acronyms, 'LOL', 'ROFL' etc.
This acronym came about on the 31st of May 2006 when the infamous Mme. Clarrence and Sarah were discussing Harry Potter. Sarah wanted to express her amusement without using the cliché acronyms, ('LOL', 'LMAO', and so forth) and so Clarrence suggested the acronym, 'WCETH'- Words Cannot Express The Hilarity. Being the quick-witted but slightly stupid type, Sarah promtply added 'BAC' - But Abbreviations Can. This was corrected to 'Acronyms', by Sieda Yasmin, and thus WCETHBAC was born.
Yaz: Today I forgot to wear my underwear again!
Jim: LMAO!"!!11 lyk.