At the beginning of the episode Cam tells Jay that it is Hitler's Birthday, which is April 20th, or 4/20. Later Phil and Mitch take marijuana infused gummy bears while in line for a movie, on what is considered the marijuana holiday of 4/20.
The mask Phil wears on his head is a Star Trek Ferengi mask with the face cut out
When Phil and Mitchell are upstairs searching the house, Mitchell is eating a bag of "Let's" chips, a fictional brand that is featured in several shows including:
1,000 Ways to Die
2 Broke Girls
Arrested Development
Awkward
Brooklyn Nine-Nine
Catherine
Chicago P.D.
Community
Crazy Ex-Girlfriend
Cougar Town
The Crazy Ones
Dollhouse
Everybody Hates Chris
Everybody Loves Raymond
Gilmore Girls
Grey's Anatomy
How To Get Away With Murder
It's Always Sunny in Philadelphia
The Lazarus Effect
The Middle
The Mindy Project
Miss Guided
Moonlight
My Name is Earl
The New Adventures of Old Christine
New Girl
Jane the Virgin
Orange Is The New Black
Skins
Sons of Anarchy
Switched at Birth
Teachers
Terminator: The Sarah Connor Chronicles
Touch
Trophy Wife
Ugly Betty
The Vampire Diaries
iCarly
Drake and Josh
White Collar
Workaholics
Alex and Joe are absent in it, while Haley only appears in one scene.