One of the easiest tricks you can do just about anywhere is shoving a cup into your mouth... what?!? Okay, In this video tutorial, Tisha Falcon Lehfeldt show you the trick to shoving a glass cup inside your mouth. Make sure it's a clear glass so everyone can see your tongue wiggle. No illusion here, just a big mouth and lips! Just don't get a glass that's too big, or you'll be sorry.