Marshall states in this episode he hit his growth spurt in 10th grade. In Season 6 episode 2 "House Cleaning" he says he hit 6'4" in the 5th grade and stopped growing
Ned, Martin, And Millie eating a sandwich is a reference to the show's ongoing gag to a sandwich being marijuana
The college drummers Ted scolds are modeled after Ted, Marshall, and Lily's younger selves.