Fucked up; intoxicated off alcohol and/or drugs and generally belligerant, a la Charlie Sheen. Usually involving greasing young sluts (whores, porn stars or otherwise).
"Dude, what happened to you this weekend? I called you ten times."
"Sorry... I got my tax refund back so I got completely fucking Sheened!"
A smart , strong and loving person. A Shaheed is usually extremely nerdy and geeky, is a closet otaku. He is a true friend and will always help you when you are in a pinch. Is a memey kind of guy and always has a weird friend group full of meme Lord.
If you diss Harry Potter in front of a Shaheed he will wreak you ass.
While drunk, using the toilet for a bowel movement and then realizing that one needs to vomit due to excessive alcohol consumption and turning 180 degrees to vomit into the same toilet.
I didn't think I was that drunk, but when I went to drop a loaf, it turns out I had to puke. So I pinched a loaf and pulled a shaheen 180 in the same bowl. It was a nasty scene.