S02E20: Quitting Cold Koala

At a slumber party, Luke calls Jessie to pick him up because he misses Kenny, With Jessie's guidance Luke decides that it’s time to give up Kenny his stuffed koala, so he tries to spend one night without Kenny and gives him to Jessie to take care of. He was probably able to make it but when Jessie tried to give it back to Luke she ended up dropping him into traffic therefore cutting his arm and head off off but Stewart thinks he can fix Kenny by performing emergency surgery.