Good, lustful sex.
Anything that scares me... Sport hm... Etc...
before a presentation or when a really cute guy approaches me
Aerobic exercise<br />
Running away from a robber.<br />
Hearing a gunshot and running.
Cutting down a tree that fits into the Widow Maker category. A widow maker tree has lots of hidden dangers so they can kill you in a heart beat and make a widow out of your wife. Cheers!