drink deep, or taste not the Pierian spring:
there shallow draughts intoxicate the brain,
and drinking largely sobers us again.
Yak butter candles
As a rule, Tibetans do not eat fish. The reason has to do with the various means of disposing of a deceased person's body, and one of those means is water burial. Putting a person's body into a body of water, where it will be consumed by fish, is usually reserved for the very poor or those without family.
PS: I hope I am not the one who has lightly sipped the waters of the Pierian spring.
PPS: Ah, ha! My first clue: An anonymous commenter tells me the ad was for groupon.com not hotels.com. I said I was paying attention to the photography and not the words, didn't I? So, I changed the first graph--after researching it which is what I should have done in the first place. I'll tell you, a bit of hearing loss can lead to some amazing conclusions.