1. Never weld in a boot that has a hole in the top of it.
2. Never lodge your foot in a place where it cannot be easily extracted whilst on fire.
3. I can do a very good Yosemite Sam impression.
4. If, while doing a Yosemite Sam impression with a flaming boot that is lodged between a K-member and a radiator support, while sitting in an engine bay...and you leap to your feet...watch out for that hood.
5.(And most important) When you do something that makes you look like a total noob...people will see you...and laugh.