The energy you lose from Masturbation and Sex.
Now go read 'Think and Grow Rich' by Napoleon Hill because Urban dictionary erased my original definition :)
Synonyms for Sexual Energy
On this page, you will find 30 slang terms related to sexual energy. Some of the top words include: peel one off, beat the meat, whacking off, Slap the Sausage, roughing up the suspect, and 25 more.