OMG! TSTLC! Share definition Flag Oh My Gosh! This Shit Tastes Like Cake! When your talk texting and eating something you thought was going to suck, but shocker it doesn't suck. ex: OMG! TSTLC! OMG! TSTLC! by Motor Boater January 13, 2009 0 0 Get merch Get the OMG! TSTLC! mug. Buy Now — $32.95 See more merch