Yes! I did it with my take home dose and it burned so bad after about 3 min i had to swallow...mouth was numb. I'll do it again for sure though...i'll do anything to get a buzz quicker.
p.s. i currently only get 70mg of red liquid methadose mfg by mallinckrodt...which I do not like as much as the white pills.
as for the burn..it was almost like menthol burn...maybe a little like hot sauce...it got stronger exponentially after several min..I was grimacing with pain..it is also destructive on tooth enamel.(my father is dentist.trust me, he sees alot of teeth.)