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1.
A feeling of complete and utter euphoria which peaks when climbing into bed at the end of an 18-hour workday, a long road trip or hours of extremely strenuous physical activity. Under perfect conditions, the physical release has been likened to that of an intense sexual experience.
It was a three hour drive in the middle of the night, I could barely stay awake. When I got home, I climbed under the covers and had a ten-minute bedgasm.
by tagz June 04, 2007
 
2.
A feeling of complete and utter euphoria which peaks when climbing into bed at the end of an 18-hour workday, a long road trip or hours of extremely strenuous physical activity. Under perfect conditions, the physical release has been likened to that of an intense sexual experience.
It was a three hour drive in the middle of the night, I could barely stay awake. When I got home, I climbed under the covers and had a ten-minute bedgasm.
by tagz June 27, 2007
 
3.
the intense feeling of orgasmic euphoria after just having had sex in your dream only to wake up mid thrust and realize you just had sex with your bed...

Definition Courtesy of Z-Pain after realizing his brother Jiggy is a lonely horndog.
"I had a bedgasm last night, it was terrible, I'm a lonely man."
by Messy22 February 23, 2009
 
4.
Bedgasm is part of Operation Mindfuck: Golden Apple Seed Mission, or Omgasm.

It involves playing jokes on a friend or acquaintance by sneaking into bed with them, especially when they think you're someone else.

When you see the look of utter shock when they realize you aren't their boo, you have a bedgasm!
Hey, home! I snuck into your Discordian American Princess's bed last night and she said let's do sharies! When she saw who I was she had such a shock on her face it gave me a bedgasm!

Oh yeah? You should see the look on your face when I punch your face in. How about a punchgasm, mother fucker?
by Dildorgasm January 30, 2009