when one has indulged in mind altering substances and moves to another state of mind
Far out bruz I crossed over hard last night, nummie nummies
by shujon March 23, 2015
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A fanfiction in which several fandoms interact with one another.

Cross-overs largely involve time travel and interdimensional travel to meld two different fandoms.
I was confused when Dr. Gregory House was treating Harry Potter's illness, but I soon realized that I was merely reading a cross-over.
by Levstrong November 13, 2007
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Cross over
Verb

1. To go to the spiritual realm when one dies and leaves the body.
2. To make somebody's spirit (persons or living creatures) go to the spiritual realm.
1. Earthbound spirits have not crossed over because they have some unfinished business / I often think about how it shall be when I cross over into the light.

2. Melinda is a medium who sees and speaks to earthbound spirits and crosses them over.
by Ezechiel February 15, 2007
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The act of two men give each other hand jobs simultaneously, thier arms crossing making an "X"
Kyle and Fairman wanted it at the same time, so they did the cross over
by David Banners May 25, 2007
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When a teacher goes from being cool to not cool. Any kind of jumper or vest or bright colored blazer would be a symptom of crossing over
Mrs. Dante had the coolest shirt on yesterday and now she is wearing a jumper with letters all over it, she must have crossed over
by Harriet Potter September 23, 2004
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1. Generally performed by two males, the cross over involves the first male placing both hands inside his partner's pants - one over the buttocks, and one placed firmly over the groin. The male's partner returns this action, so that both arms cross over. This is typically performed in public, as a statement of pride in one's relationship. Experienced couples often resume walking while performing the cross-over, though this is a difficult technique and not recommended to beginners.
2. A dribbling technique used in basketball to change the dribbling direction quickly.
1. "Bob, we've been together for several months now...it's time we performed the cross-over."

2. "That's a brilliant cross-over by Kobe Bryant, he dumbfounded the other team there!"
by Cross-over luvva December 13, 2009
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