It is used for cars and the type of roof they have, the opposite is a convertible as it can change its roof and is not a constant hard top.
by Rex420 January 10, 2022

by Malcolm No.1 June 1, 2014

A construction type hard hat kept in the trunk of an automobile for shit emergencies allowing wearer "no questions asked" free access to tens of thousands of Porta Potties nationwide.
When I wear my emergency hard hat,I can use the Porta-John at any construction site and nobody gives me a second glance.
by wolfbait51 August 7, 2011

by ceebs.man September 15, 2017

by lickmyballs2121 May 6, 2018

by TIGER_FIST_UNPLEASANT September 25, 2019

by Katahliaaaa August 6, 2020
