Tobias' Stinky Sock is a dirty sock that belongs to Tobias Pig.
The sock is a white sock with a blue toe and heel.
The sock appears lying on the ground every time Tobias' room is shown. Its distinct roles were in Hypnothermia, where Tobias put it in Peppa's cereal, and The Dreaded Drought, where Tobias suggested that the mud monster should eat it. It also appeared in Emily Hates Freddy, when Freddy mistook its smell for Emily. It also appeared being worn with its matching sock in Tobias Gets Sent to Playgroup.