Down at the local firestation a couple of years ago doing safety certs for canteen gas appliances, all going well untill I got to the fryer. Openned the door connected the manometer drop test ok, went on and lit the pilot.
Just as I turned on the stat and main burnners fired a mouse jumped out, I yelped and fell back lay prostate on the floor shouting what the **** was that!. Next thing I know 5 firefighters and a canteen lady standing around me saying "dont move, whats happened", they did'nt believe me when I told them. Only after removing the burners did I find the remains of a nest and several babies, (poor things).
Had the P*** taken from firefighters to family. Now when I go there they think its funny because I bang the appliances first.