The supposed energy in Dragonball Z. Gained by yelling like a retard until you get bored, pass out, or just get tired of yelling.
*Goku charges his ki*
"I'm going Super Saiyan, HAAAAAAAAAAAAAAAAAAA!!!"
Having sex to the point where you are so sore you can't move, then forcing yourself on top of your partner and bouncing up and down.
1st guy: "Dude I got to 50th base last night"
2nd guy: "I thought I heard you two screaming, but I had no idea."
1st guy: "Yeah I can't feel my junk now."