15. The Brachiosaurus Sneezes On Lex (Jurassic Park)
When Alan, Lex and Tim hide in a tree, they come across a seemingly friendly Brachiosaurus, who munches the nearby vegetation while (thankfully) leaving the meat on their bones exactly where it is. Just as vegetarian Lex takes a shine to one of the creatures though, it unleashes a torrent of snot onto her, much to her brother's amusement and her own disgust. Because as technologically advanced a movie as Jurassic Park remains even today, it's still not above a simple gross-out gag.