intr v, 1. To exhibit signs of having sand in one's vagina. Derived from the noun "sandbox", roughly translating to "sandy vagina."
by j$-allstar June 4, 2010

by Uromastyxsareus August 21, 2011

While at Alvin’s Island, a hooker covered in glazed dick-resin, after she experienced the rusty pelican and while inadvertently being introduced to the salty-snowball, this old women, whom I thought was a barstool, gave me herpes on the boardwalk in Pensacola (The Sandbox).....
by Thepubfucks August 5, 2018

Sandboxing refers to the action of having sex on the beach with a girl and immediately after blowing your load scooping a handful of sand and throwing it into her vag
Jack: oh I'm coming! (Grabs handful of sand and hurls it at jills vagina) you are a victim of sandboxing!
Jill: ew! Gross Jack!
Jill: ew! Gross Jack!
by Marine9728 August 27, 2013

When someone calls you a sandbox they are referring to the term "son of a beach", and the son of a beach is probably a sandbox. So, they are pretty much calling you a little bitch. Tell it to your friends.
by Sandboxes4Life February 4, 2015

by mcjam69 February 4, 2016

by Chelsea Mendoza April 20, 2008
