Outdoor Pranks and Jokes - the Myspace girlfriend joke.
My favorite prank was when my friends and I created a fake MySpace account (so this was about 5 years ago) of a moderately good looking chick (one of our cousins), and started an online flirtation with one of the other buds who was going to go on this particular camping trip with us. Of course this girl is located in the town nearest our camping spot. First, we got him to go on and on telling us his deepest feelings, and basically being a total pussy. Then, of course he is trying to set up a chance to "hang out" with this girl at our campout. Once the hooks were good and deep and the e-mail chain sufficiently long and embarrassing, and he has sent about 50 pathetic glamor shots, we get on there with the "THIS IS JANINE'S HUSBAND, YOU POS. . . " and a bunch of stuff about how he is going to kill him, rip his dick off etc. A few days later we send another e-mail from a different address, but from the same cyber-girl with a picture of this crazy looking neo-nazi guy saying, if he see's the guy in the picture that he should get to safety ASAP.
Now you all can probably predict that the crazy neo-nazi looking guy is a friend of a friend, a zany, born-again xstian, that looks like a complete psychopath. And he really is, he will turn every comment or statement into a Jesus thing. He and the friend really do live in the nearby town. The set up was so perfect. 2nd day camping, and we all decide to go to the bar, but the sucker/buddy is resistant. He is like "Naw, lets just go to that little store and buy some beer, ahh hell, I'll buy all the beer." Had we realized this we should have planned for the meeting on the 3rd or 4th day, we could have got all that free beer. Anyways, we go into the bar, and predictably he is posted up way back in the dark corner, almost too timid to order his next drink.
On cue the "psychopath" walks into the bar. . . . Everyone is trying to non-chalantly watch our bud in the corner. He is sitting in the corner with his head turned towards the wall, staring at the other wall 5 inches away from his nose. I am pretty sure he was considering hiding under the table. It was the ultimate reward for 2 hard months of setup. Guy was on the verge of tears, and so I walked within whisper range. He whispers: "Duuuude sit down, NOW", and I say "Why? What is wrong with you tonight?". I sit down and he is like "That guy with the neck tatoo is going to kill me if you don't get me out of here. I am dead serious." I say "Do you know him?" instand red face from buddy, and he just lets it go"I had a 2 month online relationship with his wife, and he found out." I led him on for a long time, getting him to give me all the details, and then pschopath "sees" him in the corner and just gets this nasty snarl on his lips and makes a bee line for buddy.
Our poor buddy jumps up and starts yelling "LOOK MAN I HAD NO IDEA SHE WAS MARRIED, YOU SHOULD BLAME HER FOR STARTING THE RELATIONSHIP, I AM SO SORRY!" and he is shaking now, his face is all blotchy, eyes are wet, but I don't think he drank enough to piss himself. The 'psychopath' handed him a Tootsie Pop sucker. Then we all just fell out laughing, by then the bartender and 50% of the yokuls were in on the joke.
We all went back to our campout a little after that, and the joke was partially on us because that born again really was a psychopath who was annoying to the point that we were ready to drown him in the river. Later on when we were all partially lit, or mostly lit, our buddy asked if that cousin would be interested in him. Of course we had all the dialogue printed out to rub in his face throughout the weekend.
That was a great practical joke.