A common hazard of MMF-threesomes. One man accidentally ejaculates on the other man. Can also occur through "sloppy seconds" experiences(oral, vaginal and anal).
"Matt dude, was there any cross pollenation on your trip to Paris(Eiffel Tower) with Molly and Dan??"
by SACK ROWE January 13, 2008

by FiveDux8805 January 15, 2020

cross rock - verb (transitive)
To wear (or, euphemistically, to rock) two or more brands at the same time. In doing so, the wearer is "crossing" (mixing) their labels.
The standard conjugation of the idiomatic verb "to rock" apply.
To wear (or, euphemistically, to rock) two or more brands at the same time. In doing so, the wearer is "crossing" (mixing) their labels.
The standard conjugation of the idiomatic verb "to rock" apply.
by RoddickRemixed September 14, 2007

Man, last night was crazy. Smoked that Sour Diesel and drank a whole bottle of Barcardi. Was cross buzzing sahn.
by Dreezy Bapeezy June 29, 2010

The act of having unprotected sex with one partner and then, without showering, having unprotected sex with a different partner, thus transferring the residue, juices, and secretions between the two parties either with or without their knowledge.
Gentleman 1: "Last night I had sex with Amber and this morning I had sex with Brittany. I didn't take a shower in between."
Gentleman 2: "It seems as though you've cross-pollinated...well done!"
Gentleman 2: "It seems as though you've cross-pollinated...well done!"
by XxdynoxX July 21, 2015

"Sure, I'll move in with you guys! But under one condition, You, me and Robert can have a threesone. Unless you're not comfortable with the act of crossing sheaths.. >;."
by lolwutRon January 6, 2009

by Ivan Batinich December 18, 2008
