When one is schmapple jacked it means they are tripping hard on DXM also known as: Triple C, cough syrup (not codeine). Can also just be a word used to refer to tripping hard in general. Can also be used in it's present participle form as schmapple jacking or cut short as schmappled.

"Dude you look so schmapple jacked right now"

"Yea that's three bottles of cough syrup. I'm getting schmappled tonight."
"Dude you look so schmapple jacked right now"

"Yea that's three bottles of cough syrup. I'm getting schmappled tonight."
by Amorino delfino July 15, 2018
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