You can't...

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You can't smile a sentence...

You can't laugh a sentence...

You can't sneer a sentence...

You can't glare a sentence...

That's what I learned in my creative writing class today. I was like, but...but...but... Yeah, I use "blah blah blah," he smiled/laughed/grinned/[insert anything here] a lot. 

I also learned that you can't write "Get out," he hissed. Because there's no s-sound at the end of out! I never even thought of that. 

I've finally managed to edit out all my "and's" and adverbs (see how I used an adverb at the beginning of the sentence?). I'm working on my repetitions. Now I'll have to check my dialogs to see if someone's doing something that's not possible. 

Anyone else guilty of the above, or some other no-no's?