So, I have two glasses that are stuck together. How can I separate them without damaging them?
I have already tried this but it didn't work, as the glasses are really thick:
First, drizzling some vegetable oil or dish soap in between the two drinking glasses and wiggling gently to see if they'll pop apart.
Hot water and ice water. Submerge the bottom glass or bowl in very hot (but not boiling) water. Fill the uppermost glass or bowl with ice water. Presto! The simultaneous expansion and contraction of the layers should unstick even the most stubborn glassware.