Tickling the Dragons tail refers to:
1. Doing something very dangerous that you may/may not get away with. Sometimes the dragon wins.
2. The origin of this phrase came out of the USA
Manhattan project to develop the atomic bomb. Nuclear scientists would induce ever increasing levels of criticality - close to the point of a nuclear chain reaction - a very dangerous and lethal undertaking. The term "tickling the tail of a
sleeping dragon" is accredited to the Nobel laureate Physicist
Richard Feynman who was involved with the Manhattan project.
1. Pouring gasoline with a lit fag
in your mouth is tickling
the dragons tail.
2. Having random one-night-stand sex without a condom is tickling
the dragons tail.
3. Secretly having sex with your wife's sister is tickling the dragons tail.
4. Using a screwdriver to separate beryllium and plutonium is tickling the dragons tail.