sock muppet Share definition Flag Name for tween who tries to wear inapropro clothing. i.e. crop tops, buttcheek shorts, boobie bras 'Hey look at that seventh grader''eh such a sock muppet' sock muppet by kissmyjesuschrist March 13, 2015 0 0 Get merch Get the sock muppet mug. Buy Now — $32.95 See more merch