Well, how can I put this? Most commonly, "spunk" is a slang term for "sperm". There are other meanings though as JoeRay suggests. It can also be used as a verb, i.e. "to spunk" or "to spunk up", meaning "to ejaculate".

LOL

Thanks james <.<

Spunk also means... well.. I don't want to say it... it's rude D:

I think 'spunk' means courage and spirit in English,but It means someone burst into anger in Scottish english. to spunk up =鼓起勇气/勃然大怒。