When a guy goes down on a latin girl and she can't control herself, causing her to "jump" around uncontrollably. Can also refer to a vibrator called The Bean
Guy 1: I ate out Maria last night and she started shaking around so much I had to slow down.

Guy 2: Thats what you call a Mexican jumping bean
by MajinVegeta May 26, 2013
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when you stick a dildo in gas and then stick it in your girls vaginal cavity then light it on fire and she will jump around and you have to put it out with your cum quick
Dirty Mexican Jumping Bean
by Chris Bird April 29, 2009
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A citizen of New York with Asperger’s
I’m Mexican bean pie and I know you had a bad day but that’s cool we should play Fortnite
by Osoboro April 14, 2023
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A Mexican who has jumped over the border into the US to seek refuge and leave Mexico
guy 1: hey did you see that dude jump the border

guy 2: yeah bro, that's a Mexican jumping bean right there
by Señor Mexicano mano October 23, 2022
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