Looking at what you posted, and filling in what I imagine are the bits you left out (no way that was the start of your sarcasm, it was the end of their patience with said sarcasm), I would have kicked you too. It's definitely your approach. I was in the same exact situation last week - random dungeon, three people new to the dungeon, all of them on skype with each other and clearly entertained. It wasn't an easy dungeon, either... Sunken Temple. After we wiped on the Terotaur I realized they were new, so I explained mechanics, we won the second time, and one shot the following bosses. I didn't get kicked.

I'll let you figure out what the difference probably was. Here's a hint: it has to do with approach.