tugboat
n.β Β«The term for an attractive specimen of the female species is “skins.”…The only term worse (in terms of attractiveness) than “skins busters” is the frankly magnificent “tugboat.”Β» ββHow to speak Bristolian” by Red Squirrel Passably Content (Bristol, United Kingdom) Jan. 29, 2009. (source: Double-Tongued Dictionary)