To wear one's baseball cap turned inside out and often sideways to encourage a rally from your favorite baseball team. Must be performed in the confines of a sporting facility and works best in the late innings of a game with runners on base.
The Yankees were down by one run in the bottom of the ninth so i rocked my rally cap.
by salmon hamburger October 6, 2006
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1) (v.) To wear one's hat/cap in a way that differs from the normal fashion in which the person wears it.(i.e. Backwards, sideways, or inside-out). Often done for good luck.

2) (n.) A hat or cap worn in a fashion stated in definition 1.
"I never saw the point in a rally cap; how does turning a hat help you?"
by Some call me...Tim. February 23, 2005
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When you put a condom on before you go out partying, because you know you'll forget at the end of the night, after all the boozin.
"Why the fuck do you already have a condom on Blake?"
"dont worry about it girl, i call this shit my Rally Cap. I put it on before going to the bars, because i always forget too when having drunk sex"
by Gallagopher April 30, 2008
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Getting head, blowing load across her forehead, then giving her a reverse Roman soldier and ass hat; while both chanting exuberantly, "Rally! Rally!"
My team was losing in the bottom of the 8th, so I took my girlfriend in the back room and gave her a Scranton rally cap.
by poonmoney April 11, 2009
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When your having sex with a girl and you nut quicker than you thought, so you turn the condom inside out so you can rally for a little bit longer
- yo I used the riverside rally cap on this bitch last night
by Dirty Dick Isaac July 3, 2019
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