Ask your questions or stop complaining.

Prof. Quote of the Day: (in thick Indian accent)
"...ohhh don't look at me with that look (hand gestures with arms waving wildly) like you don't know what I'm talking about ~ go on ask your questions ~ otherwise I get your student reviews with the "Oh no he doesn't explain things" Here is your opportunity! Use it! "

About half the class raised their hand - LOL - moral of the story: ASK, or don't complain. and Seize the Day!