the kind of buff you only get from being in jail for multiple years having nothing to do but work out.
Like Val Kilmer's bod at the end of the movie Felon or Edward Norton at the end of American History X.

For example:

" I met this totally hot guy at the beach the other day, he was fucking jail buff! "
by sweetcheeksO7 August 13, 2008
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A harsh punishment in World of Warcraft Classic, where the character is forced to stay offline to preserve their current world buffs, or wait for the next round of world buffs to drop during the day. This could mean staying offline for several hours on the buffed up character to prevent the buffs from expiring.

Sometimes buff jail can last for several days.
It's the last day of Darkmoon Faire on Sunday, but we don't raid until Tuesday. I guess we're stuck in Buff Jail until raid time.
by magnetite2 April 13, 2021
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A harsh punishment in World of Warcraft Classic, where the character is forced to stay offline to preserve their current world buffs, or wait for the next round of world buffs to drop during the day. This could mean staying offline for several hours on the buffed up character to prevent the buffs from expiring.

Sometimes buff jail can last for several days.
It's the last day of Darkmoon Faire on Sunday, but we don't raid until Tuesday. I guess we're stuck in Buff Jail until raid time.
by magnetite2 April 13, 2021
Get the Buff jail mug.