1) The act of driving in a particularly "good guy" style, for example at high speed or with complete disregard for the rules of the road and the well being of other road users.

or

2) Particularly vigourous and repeated masturbation.
1) Tikky-Toku's helmsmanship was particularly committed during the 2004 European Grand Prix - or - Mister Rash displayed impressively committed helmsmanship en route to Forli airport.

2) ANGUS's helmsmanship was so committed his nob fell off after seeing the latest SPLANGUS video.
by Esteban Tuero June 9, 2004
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