A thong that goes up the front. in other words....a wedgie + a camel toe in one pair of underwear.
She wears a two way but im not quite sure what that means.

or...

I dont see why people wear two-ways. I would just free-ball it.
by Linz March 18, 2005
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short for two-way pager- a small electronic device that allows communication in two directions; a more advanced version of the original "pager" which worked by allowing a caller to send a numeric message to the person with the pager. After this message, the person would have to find a telephone to place a return call. A two-way pager allows a message (text) to be returned to the person placing the original page.
She wears a two-way but I'm not quite sure what that means.
by Jeremy June 11, 2003
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a sex toy that two people can use at the same time (ie a large dildo that has two sides for insertion)
kimmy and sandy use a two-way when they have sex
by &hearts pebbs &hearts December 17, 2005
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also:

a radio communications device that allows for transmit-and-recieve operations, the incorrect version of a Family Radio Service radio.
Mommy, there are scary men on the two-way.
by IrishRepublicanArmy October 26, 2003
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"Two Way" dresses are designed to be worn in more than one configuration. High fashion for low budget party girls. ;)
She wears a two-way, but I'm not quite sure what that means.
by Loserfrog September 28, 2009
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suspenders or some form of similar kinky underwear
she wears a two way but i'm not quite sure what that means (8)
by peep peep March 20, 2008
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