In the act of Performing Oral sex on a Female, You tightly squeeze your lips together and Then Press them against the vagina Pushing air against it, making the "motorboat" effect usually used on the Breasts.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

To move in a misdirected yet very purposeful manner, usually making a big scene and calling lots of attention to oneself in the process. It can be wandering aimlessly or striding very purposefully toward someone/something but with lots of distractions along the way and always completely ignorant of everything going on around oneself.

In short, a sort of all-over-the-place reckless abandon where you're either totally focused on something, or not focused on anything at all, but completely ignoring everyone around you as you knock into things, walk this way and that as if you forgot where you wanted to go next, and in general making a complete spectacle of yourself.