(noun, pl. goojax) The very last drop left in the bottom of a glass or other beverage vessel that is
impossible to drink no matter how hard you try.
Exemplary goojax include:
-the ones at the bottom of soda/beer cans that you have to tip
your head backwards in order to drink.
-the ones that make all the noise when you try to drink them through a straw.
-the ones in the bottom of last night's shot glasses that manage to get all over the outside of the shot glass and make it stick to the table when they dry.