Share 'Wax stuck at the top'

Hey there, I decided to fire up my lava lamp that's been hidden in the deep corners of my room for a couple years. So, I turned it on and let it do it's thing for a couple hours. To my surprise the wax didn't fall down once it made it's way up, most of the wax just floated up and sat there while a little amount of wax was on the bottom. I turned it off and went to bed, next morning the wax was st…