The act of placing one's posterior against that of another and farting, thus safely depositing the fart in the recipient for later retrieval.
Deav asked his brother at the Indians game, "If you fart into someone's butt, what would you call that?" A guy in the row behind responded, "Well I'd call it a safety deposit box."

Deaver: "I gotta fart!"
Neil: "Quick, stand up and use the safety deposit box!"
by Deav, Belkins & Associates January 24, 2012
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its like regular vaginal or anal intercourse but replace the penis with the balls. these become like anal beads or cute little dildo nuts. the friction is a little harder to produce, but the intense feeling of bonding that is synonymous with nevada depositioning more than makes up for the lack of normalcy. anyway, you're from nevada, you're not looking for missionary position are you? you want the fresh. the epic nutsertion of delight.
A player handles a lot of money in life. He know the value of a real investment.
;)
A nad properly alloacated accrues real interest. love interest that is.

two lumps of coal can become diamonds with this technique.
yo yo yo, i pulled a Nevada Deposit Box with my girl and left my jeweles in there for safe keeping. also, the value increases over time.
by cetera December 13, 2008
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when a chick is clean of any STD's
i've never heard of that chick puttin out she has to have a safe deposit box
by d-town slacker July 6, 2009
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The person who you trust with your life, who you tell all your secrets and is not you're boyfriend. A safe deposit box will keep all your secrets saf and is a very honest person
Me and Jessie were best friends, she was my Safe deposit box
by cheetahguy44 January 18, 2012
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A term used to describe someone you are fucking.
Nah, we're not going out man, he's just my cum deposit box.
by Jim April 4, 2003
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When you fart in someone's drawer, close it, and then sneakliy tell him/her that you left a deposit and that he/she should pick it up postehaste.
Yo, G, I left you something in the safety deposit box, you should go check it out. I think you'll find it...enchanting. `
by MercuryRetro November 25, 2011
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