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.
YMMV: Epic Meal Time
Accidental Innuendo - In "Chili Four Loko", after Cousin Dave opens a fresh bag of potato chips and takes a whiff of it, Harley's narration goes on to say "Love the smell of a fresh sack".
Alter Ego Acting: In almost all appearances outside of the show, Harley seems to have the same attitude, but this video looks like the other appearances were simply his personality notched Up to Eleven to maintain the on-screen character.
"Drunken Mess": the video involves absolutely no cooking; just the guys spending copious amounts of money hiring a limo, buying ridiculously expensive food, and downing many, many shots. Some fans think it's awesome, and others think it's the show's weakest moment.
Their current record for calories is 138,226 calories, and their current record for fat is 6,892 grams. This is from not mostly sugar, but combinations that mostly consist of meat.
"Chili Four Loko", using a now-banned alchohol and caffeine beverage in chili that includes some bacon and by "some bacon", if the definition of "some bacon" is all of the bacon in a local supermarket.
The Sloppy Roethlisberger
"Puzzle of the Lambs": it's a three-headed lamb-based "culinary abomination"...wrapped in bacon.
"Turbaconepicentipede": they stuff a quail inside a cornish hen inside a chicken inside a duck inside a turkey, and wrapped it all up in bacon inside a pig. Then they made nine more and stuck them together with bacon "anus to mouth".
Muscles Glasses, the one guy in the cast that has a backstory, and who does most of the eating. Lampshaded in the "Meat Mummy" episode, where Harley discovers (much to his annoyance) that everyone in the cast decided to dress up as Muscles Glasses for Halloween except him.
Tyler, who started growing in prominence after "Drunken Mess".
Sarah (the girl who ate the Massive Meat Log) popped up in a handful of other videos before disappearing. The fandom rejoiced when she came back for the Angry French Onion Soup.
Gross Out Show: Some people may be disgusted by what they serve up. Viewers beware.
Growing the Beard: The beard started to grow in "The Greasiest Sandwich Ever" with the epic music, but the beard was only complete in "The Death of the Double Down" once Harley started to seriously ham it up.
Harley: Who's the coloniel now? Us.
Hilarious in Hindsight: The Stinger for "Fast Food Sushi" is "Next time, we eat a gun.". Becomes somewhat hilarious that Harley made good on his promise in "Russian Meal Time", which is full of firearms. Made more hilarious at the end of that video's stinger, where FPSRussia dribbles bullets out from his mouth.
It's Popular, Now It Sucks: Some of YouTube has been acting like this, because they have a bigger budget (in part due to advertisements for Netflix and Gamestop) and have collaborations with other YouTube celebrities.
Nightmare Fuel: "Zombie Meal Time". The gang decides to look like zombies, there's no over the top yelling or gratuitous bacon strips, the music is actually kind of scary, and they don't even talk. They grunt, moan, and make horrifying noises. The zombie make up looks disgusting and scary, and the first food item they show? It looks like some brains, and it's frightening. Sweet dreams.
Squick: Some of the recipes can invoke this reaction. "Puzzle of the Lambs" was one, but particular note is the "Mother's Day Special", where they made a "baby rabbit bastard son of a turkey"...complete with a bacon umbilical cord...
In the same video, one of the crew passes a bag of breast milk to Harley. Muscles Glasses proceeds to drink shots of Jack Daniels mixed with it.
Some of the Erotic Eating is kinda creepy, especially when Harley (who's usually awesome) starts making rape faces.
Depending on the episode, guests who eat with the crew don't just eat the meal: they simply smear it around their face.
In "Tequila Taco Night", Harley says that he's been "sippin' on that green and smokin' on that liquor all day."
The Stinger for "Epic Chicken Burger Combo" is "Next time, we eat crack". While it seems you're not supposed to take the remark seriously, Harley's stoic expression, coupled with Prince Atari nodding to the statement, seems to imply otherwise.
The "Fast Food Meatloaf" episode with Lights may have been one of these. The episode dialed back on the problems with previous episodes (such as excessive product placement and the actors being complete douchebags) and managed to becoming entertaining again.
The "Epic Chicken Burger Combo" even more so: eating a giant sandwich made out of sandwiches can do that.
Following their one-year anniversary episode of "Fast Food Pizza Cake", the quality of the episodes has notably increased and harken back to how it was before "Drunken Mess": the return of the epic music, the calorie/fat counter and new meals that topped the last one every other week.