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2.
The quality of acting like a total homo-erotic douche. For example, a guy noticing when another male classmate has purchased new Diesel jeans.
"Man, that dude has a lot of dieselness, what a fag!"
by the antidouche May 06, 2010
 
1.
Not a made-up word for diesel; pretty strong and buff; a given nick name to someone
You see that dude at the gym before? He's got some dieselness to him.
by MCNY October 22, 2008