What did you think of the movie buried?

Me it scared the hell out of me, in specially that one part with the snake in his pants that really really scared me i had to fast forward threw that entire part and not look at the screen, its the most terrifying movie i ever seen, the only reason i watched it because i love ryan reynolds but this movie during the entire movie your stuck inside that coffin with him sure it got great reviews and that's one of the main reason i watched it its praised on rotten tomatoes but when i watch it, oh my god the movie is so freaking scary and terrifying. And spoiler alert look away now at the end i thought i was going to have a happy ending but nope watch the movie and find out what i am talking about because of that ending all that scary stuff made it worst, what do you guys and gals think i hope someone agrees with me please let there be someone that got scared at that movie like me?