When you bone someone while speaking to them in a language learned through Rosetta Stone.
Dude, after using Rosetta Stone for a few months, I Rosetta Boned the Swedish yoga instructor.

Bro, I Rosetta Boned her so hard, she started speaking French.

I got Rosetta Boned last night and started speaking in tounges!
by poopoo23oolala October 10, 2011
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A one night stand where participants do not share a language. And, in theory, you each leave the encounter having picked up a term or two.
Girl 1: "Did you really Rosetta Bone that Swede last night?"

Girl 2: "Ja, hela natten!"
(Yes, all night!)
by TRikki February 12, 2014
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