A sex tape featuring Usher and his ex-wife, Tameka Foster, is being shopped around, and rumor has it the activities are slightly kinky. TMZ reports: "We'll keep this PG-13 and just say ... the people in the video are both givers." Sounds like mutual oral sex to us, but rumor-mongering blogs have decided that Usher and his wife are into pegging.

A tipster suggested we devote a post to this subject, so we talked to Lux Alptraum, editor of Fleshbot and resident sexpert, and she helped us out with a little Pegging 101. Herewith, we ask and she answers.

What IS pegging? Well! It involves a gadget. Sort of.

Everything You Need To Know About Pegging