Definition of "rorty"

"Tell us a good story, Rodney — one of your rorty ones." / Mr. Rodney shrivelled. / "I fear," he murmured — "I fear I am scarcely in the — er — rorty vein to-night."

1898, Robert Smythe Hichens, The Londoners, page 280

But compared with the heavy, muffling darkness of the night in which the countryside was sunk, the lights looked positively rorty

1932, Stella Gibbons, Cold Comfort Farm

Any speed any gear it doesn't matter. The 2Eleven's got an enormous powerband huge performance and the rortiest exhaust I've heard in an Elise-based car

2007 May 31, “Lotus 2-Eleven - Road Test First Drive”, in Autocar