Dream Interpretation: Glass

It's time for another round of: What's that mean, dream?
The dream: I'm at lunch with some friends and I go to throw away my plate.  As I throw it away, I start coughing and then feel something sharp in my mouth.  I pull it out and it looks like a little white piece of tooth.  I'm immediately terrified because I went to the dentist earlier in the day (in dreamland), and I assume they must have chipped my tooth and now it is crumbling in my mouth.  But then I start coughing...and coughing and coughing and coughing and I spit all the sharp pieces out into my hand.  They turn out to be a massive, massive, palm-size, two-inch-tall ball of GLASS SHARDS. I run over to my boss (because in dreamland it's totally normal to have lunch with your boss) and show her my palm full of glass.  "WHERE DID THIS COME FROM?!?!" I scream.  "Oh my gosh," she says, wrapping her hands around mine. "Do you remember when I asked you to go put that glass in the dishwasher?" "Yes..." "Well did you?"
And then the slow dawn of realization....I ATE THE FREAKING GLASS.  And THEN, to add insult to injury, my boss asks me if I'm still good to work that night.
And then I woke up because I was literally gagging in real life at my own dream.  True story. 
DreamMood.com's Interpretation: Glass "highlights your vulnerability, confusion and frailty. Alternatively, it may symbolize your hurtful and cutting comments. Perhaps you need to be careful in how you phrase and word things or run the risk of offending others."
Eating with others signifies harmony and intimacy.
To dream about your boss represents the bossy or authoritative side of your own personality.

So, according to DreamMoods.com I am a bossy, mean woman who struggles to communicate unabrasively, and yet...surprisingly intimate and harmonious. 

How would you interpret my dream?

Had any strange dreams lately?