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.
Big Lipped Alligator Moment: All of his videos can be summed up with this trope, but one notable example is in Dude Time. After RED Soldier sprays himself with Dude Time, he is approached by Scout's mom, who has Blank White Eyes. RED Soldier then has a seizure and four BLU Soldiers pop out of him, form a line, and explode. That in itself fills the "appears out of nowhere" and "strange in context" criteria, but then it takes "never mentioned again" to the extreme because, once the BLU Soldiers explode, the earlier clip of RED Soldier spraying himself with Dude Time is played again and, this time, he walks away with no reference to the earlier scene with Scout's mom and the BLU Soldiers, as if implying that what just happened never happened.
Colbert Bump: Just about any music he uses in his videos and references in his comments end up being raided by comments referencing the videos the music that have been used in on YouTube. It is inevitable, and RubberFruit himself absolutely hates it.
Special Effects Failure: Deliberately done. Raiden and Sam's "final fight" is represented by them... swinging their swords in weird and unwieldly ways via SFM. Raiden swings his blade up and down and Sam just moves his this way and that. Oh and Sam's face.