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1.
To pass out while inhaling nitrous oxide.
Tina fished out while driving. Now her dumb ass is in the hospital.
by theo April 03, 2005
 
2.
Having ingested too much, or just the right amount of GHB and/or purple hooter so that one flails about on the ground, resembling a fish out of water.
"Tina was all fishing out in a G-hole and when the paramedics arrived, she was face down in the river."
by SONOFNIP July 31, 2006