These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Also, the weird scene where Kumar goes off into the woods to pee, gets approached by a weird guy coming from the opposite direction who decides to pee on the same bush, and who gets very angry when Kumar asks him why he picked that particular bush when there are so many other ones available
Also doubles as a shoutout to Tommy Boy, when Tommy and Richard initially express disdain for the sappy radio station they're listening to in the car, but end up singing along to the Carpenters' "Superstar" at top volume while sobbing uncontrollably.
He Really Can Act: This movie is what really put Neil Patrick Harris' child star life behind him.
Ho Yay: This movie is positively filled with subtext for Harold and Kumar's relationship.
Kumar licks Harold's face because he "thought you'd wake up if I did some gay shit."