I usually use Orz instead of OTL...it just comes more easily to me.
囧 took me longer to get than it should've, considering how obviously it was a face...

Back when I first started getting into the Internetz and joined a few forums, lol confused me for the longest time...I kept thinking it was a face until I finally asked and was like, "....Oh."

Ttyl, f2f, and asap also took me a while to get.