Noun: A dutch bike is a clever verbal spoonerism for a butch dyke. It is used when you are trying to indicate to someone around you that there is a female in the vicinity who obviously looks very butch, but you don't want to make it obvious.
"Woah, hey Laura! There's a dutch bike pedaling on by to your 3 o'clock. What a beast!"

"I always wanted to travel to Holland to ride a ::points to dyke in a non obscure manner:: 'dutch bike'"
by Johnny5Aliiive January 16, 2008
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