Fred and the gang had just wrapped up a particularly hard mystery wherein the criminals appeared to be uncanny doppelgangers of him and his friends. remembering velma's reciting of the ancient german myth that doppelgangers would try to kill the original and take their place, it was decided that all of the offending copies should be executed on the spot.
fred was the only one brave enough for the harrowing task of burying his 'friends'. knowing that his real friends where back at shaggy's comforted him, but he still got an uneasy feeling looking at the mangled corpses in the back of the van. he was, frankly, scared of having to look at his double, for reasons he can't discern. for that reason, he vowed to bury that corpse first and thus get the hardest part over with.
fred dragged his double by the feet across the heaped corpses of his not-friends. he was still astounded by the sheer details in the copy - the same zits, the same ascot, the same washed-out stains on his own white shirt… fred tried to think of something his double wouldn't have, surely the doppelganger wouldn't have thought of, say, the mole on his left hip bone? he began to undress the corpse accordingly, pulling its pants down only to find the same, hair-tipped mole on the left hipbone. a cold chill ran down the original fred's spine. what else did this doppelganger get right? he pulled down his pants even further, revealing the corpse's genitals. for a frame of reference, he began to undress himself as well.
taking the doppelganger's penis in his hand, fred started to try and get the same familiar feel that he knew from his own shaft during his private 'trap study time'. closely examining the circumcision scar present on both dicks. such attention to detail! feeling curious, he knelt down to have a closer look. the cock was cold and dead in his hands, but, after leaning in close, it smelled like his own. after taking a tentative taste of the tip, he could taste his own stale piss and precum. his findings astounded him, and the rush of scientific advancement in the field of doppelganger research made blood rush to his loins. he began feverishly sucking off the dead cock as he fondled his own. unable to stand it any longer, fred flipped the corpse on its stomach to reveal his own pale, tight ass.
he spread the cold, hard cheeks, revealing a pucker crusted with post-mortem bowel evacuate. fred was too horny right now to care, plunging his living cock straight into the cold, unrelenting ring of muscle. rigor mortis made his double's ass clench like a silken vice, milking him for every drop he had as he began to thrust hard into his doppelganger.
being otherwise inexperienced in lovemaking didn't bode well for fred's lasting power as he came hard into the corpse's icy hole. a mixture of semen and dislodged shit dripped down the pale legs of his double. panting, fred withdrew himself, his fears mysteriously gone in the rush of lust and teenage hormones.