Jessie episode Ghost Bummers
October 5, 2013
The first episode of Season 3 of Jessie (Episode #53) is a Halloween special about Jessie and Mrs. Chesterfield throwing competing parties, and the building turning out to be haunted by ghosts. Ravi is dressed as Einstein at the party and as he tries to explain to Jessie the origin of the ghosts she tells him "It's hard to take you seriously with that mustache. You look like Super Mario's retired grandfather."
The creators of Jessie held no right over Nintendo's Mario, but they only included a minor reference to the series.