Okay, don't read if you don't want to be spoiled at all. So, you know that scene with the Sector 7 guys and Bumblebee decides to lubricate on Simmons. If you look to Bumblebee's left you will see Jazz. As Bumblebee lifts the cap up and the red thing hits Simmons on the head, notice that Jazz puts up his shield to protect himself from being sprayed on. You can actually see little drops of fluid hitting his shield. Seeing this in the theater after the sixth viewing got me laughing so hard at that scene again.