1. Cool, hip, trendy. Corruption of "Of the hook", which meant that something was cool because you'd have to immediately take your phone "of the hook" to tell all your friends about it. Basically, this original thread of meaning has been completely lost with the introduction of the "eezy" (common to a lot of slang at the moment).
"I'd say my plan is more 'off the heezy' now than at any other time." - Draken