An expression used by hardcore bikers in reference to or in conjunction with, standing before a non-traditional (gay) yet somehow impressive (in build or in style) chopper (motorcycle). Direct refence to "that's so..." denotes the homo of the term useage.
"That's so chopper I had to get my bro hug on with him."

"That's so chopper I totally banged a one nighter bromance with (named person(s))."

"I said you nasty. You know i only date boys that's so chopper."
by Capt. Stash February 9, 2014
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