1. When you use an iron to dry your underwear, the iron turns excess water into steam and lifts it away into the air, leaving the underwear warm and fluffy. Like a bunny, but in your pants. A pants bunny.
(taken from a story by Jay Barnes)

2. One who likes being in someone's pants. My boyfriend's nickname for me.
by Bela Rasmussen October 5, 2004
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Someone who always fucks or dates firefighters
Oh my god, she is such a bunker pants bunny, she has slept or dated every fireman in the county
by Bunkerpantsbunny September 6, 2016
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