Sticky when hot

For quite some time now, we had known summer was back. But the reality struck hard on our faces when this happened. We were having our routine coffee break (the only peculiar fact being that we usually work between breaks rather than the other way round!!!) When our friend 'G' lifted the coffee-pan off the heat-pad, something more than just the pan came off alongwith.
Seems that the pad got quite worked up, and couldn't stand the heat. Quite surprising, coz we had been using it day in and day out with hotter stuff (I mean the temperature here, guys). May be the summer caught up with the poor pad. Thought summers were sticky only in India. Surely not in Germany, though!!!