YOU ARE READING Jokes, Riddles, Comebacks and more Humor #comeback #jokes #laughs #lines #pick #riddle #up Anti-gravity 51 1 0 by Amandachen18 by Amandachen18 Follow Share Post to Your Profile Share via Email Report Story Send Send to Friend Share Post to Your Profile Share via Email Report Story I am reading a book about anti-gravity. It's impossible to put down.