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.
Tom is dreaming that Emma is back and begins to kiss her... he wakes up and realizes he is licking Mitch's leg.
"We're partners [...], we share everything. We're like... like the balls!"
Tom tries to explain to Mitch why living with Emma was much pleasant that living with him:
Tom: It was great, in the bed.
Mitch: Yeah, I know that.
Mitch: Just kidding.
The aggressions by Mitch wearing an Einstein's mask
Genius Bonus: There is a scene where Mitch draws a complex pattern explaining who wants to have sex with who ("balls flux") and then writes "Relation of Ball" on top of the chalkboard. It is a reference to the Boole Algebra. Note that "Boole" sounds exactly like the French word "boule", which is an exact translation of "ball" (both meanings).