Pronounced: SHIH-MAHD-WEIGH-ET
Scottish hungover Dialect.
Past Tense for being
drunk. The reason you miss your train to
london, woke up with a wrecked house, unicycled in a golfcourse, tried to attempt that
table thing that matilda does in the film 'Matilda', made a Catapult, and woke up feeling like you just ate a handfull of roofies and adopted the life of a victim from 'CSI: Special Victims Unit'.
See: Mad Wae It, MWI or Madwaeit.