(Verb.) To workout in an extreme fashion (usually having to do with MMA) or to overcome an opponent while using skill and technique as opposed to brute force.
Diesel is a code word used in front of children, grandmother's, and the sensitive individuals to communicate with your partner that you want the sex and you want it right now.
Diesel.
No other words are required. Diesel is a completesentence in just the singular word.
Diesel is also one of the characters from Thomas the Tank Engine.
"There's been a diesel running up and down this train, causing all sorts of fucking havoc."
"Yeah, I still feel like there's a diesel lurking about."
"Man, I'm trying to get diesels out of my life, you know?'
"'Cause diesels bluff, they go too far."