Disappointed by the gifties you got from Santa this weekend? Fear not! According to Life Hacker, they're not as worthless as you may think. In a study conducted by WePay.com, most people assume the presents they receive are 18% less valuable than they really are.

This psychological phenomena may have something to do with the fact that we all bust our butts to get the perfect lil' something for all our loved ones and maybe unconsciously assume nobody else puts in as much time and energy. Moral of the story: Before you write something off as future closet clutter, take it back, get a refund or exchange, and enjoy your unexpected holiday bonus!