i always gag when i'm brushin' my tongue(i used to always spell that shit wrong..HA)... and i feel what your sayin' about the food.. couple years back when i used to drink too much i'd eat food at like 2.a.m. right before i went to bed.. and get up for work at 5:00.. and when i'd go to brush my tongue it'd 'cause the gag affect and food would come up... hella nasty half drunk and shit... glad those days are over.