LOLCATS can be fun, and can be a big time-waster.  It has spawned tons of offshoot “industries”, including a computer language.  It has been documented and parodied in a do-it-yourself T-shirt.

The I Can Has Cheezburger site is the definitive repository, and they have some funny ones

Other people have their own

But here’s the one that made me laugh:

(at the risk of explaining something that may be obvious, think of Abram before he became Abraham)

Thanks to Miss_Colleen.