A thong that goes up the front. in other words....a wedgie + a camel toe in one pair of underwear.

suspenders or some form of similar kinky underwear

A two headed strap-on sexual device.

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.

a sex toy that two people can use at the same time (ie a large dildo that has two sides for insertion)

device for communicating with others by using a telecommunications device similar to a walkie talkie

Sex between two people. Like a three-way, but crappier.