To start off, this movie doesn't have an understandable plot. Even if it did it was badly portrayed. Not only was it confusing, it was totally retarded.
Further on, the amount ridiculous sexual references and cheap jokes is just unbelievable. Lets see, we had two dogs literally doing it nonstop in the beginning, giant robot testicles, old pale man's scrotum and bear ass, robot humping humans, giant robot penis', two twin robots with stereotypical personality of 1970's retro/gangsta black guy, a woman going nuts after the purchase and consuming marijuana brownies, multiple characters getting killed and being instantaneously revived, needing toilet paper gags, man pussying out gags, woman falls on guys balls gag, guy electrocutes himself gag, people not caring about giant robots attacking the city and last but not least the huge amount of new transformers robots makes your head spin to the point of which they all just look the fucking same.
Here's another horrible thing, Optimus prime was barely in this movie. Guess what happens? They fucking kill him near half of the movie. So you had numerous of other pointless Auto-bots driving around. No really, they just drove around. Barely any of them transformed other than Bumble-bee and the stereotype twins.
All of the robots on the Decepticons look exactly alike. I couldn't tell the difference between Mega-tron and the frickin' helicopter one.
Megan Fox didn't show much skin. In fact, she didn't show enough, because the straight fact is her acting in this movie was basically... terrible.
But you no what? that doesn't really matter though. Transformers is supposed to be the excellent action film, right? Wrong, it was just damn right ludicrous. They were just boring and basically the same old thing. Huge amount of random explosions which was rather fucking annoying and pointless, your favorite auto-bots barely even fighting, random shit flying about and army guys just sitting down pretending to be actually helping. Oh and Decepticon was rather flying around and showing off his tattooed army plane than actually have a fight scene.
Now here's just the worst part, Sam finally revives Optimus with some ancient energy sword shit. So everyone give him their parts in order to make him more powerful. It looked fucking amazing, well from far away. Prime got new missiles and gadgets and them stupid idiots wouldn't even bother closing up on him and let him showoff. Worst off all, he has a 2-3 minute fight scene with the two of the most powerful and evil Decepticons ever. He killed them both without trouble, which literally killed my hype for it as it was actually a moment in which I was interested and just concluded so fast it made me want to punch myself in the balls.
So it just sucked. It sucked as a transformers movie, an action film and at its attempt at making the audience laugh and interested. It was just degrading to watch this film. Not worth even a cent and 2.5 hours at all.