Ship’s Mast

As the previous commenter said, to ‘play ship’s mast’ is to climb out of the passenger seat of a car with the belts out of both windows and to lie on the bonnet/hood holding the belts while travelling at speed. The film in question is called Deathproof however, not Grindhouse.

“Say you’ll suck him off to convince him to lend us his car and then we’ll play Ship’s Mast!”

Ship’s Mast by overlordnat December 3, 2022

Ship's Mast

To tie belts to both front doors of a car. Then while speeding, climbing out through the passenger window, grabbing the belts and laying on the hood at high speeds. As seen in the movie Grindhouse.

Kim: owh hell no! you said were were never, ever, going to play ship's mast again!

Ship's Mast by Saint921 April 14, 2007

shipsmast 

When one gets out of a moving vehicle from the window onto the roof and continues to slide down to the hood of the car, and, if daring enough, stands up.

A: Remember Josh?
B: Yeah, that crazy bastard, what about him?
A: He died last week playing shipsmast.

shipsmast by schnapple December 25, 2007