This is a list on,"You know you watch too much DBZ when..." So read up, have fun, and don't take these too literaly...(the ones in light green are my personal favorets.
*You tie a yo-yo to your wrist, then pretend to blast someone with it, instead hitting them on the head and rendering them unconscious.
*You come to school with a sword, and attack any bullies that you see with it, and you call your best friend Goten.
*You make a scouter out of a bit of cardboard, and pretend to take everyone's power levels with it, sweating as you (pretend to) take one which is even higher than yours.
*You start throwing your moms best china plates at people, yelling 'Destructo disc!' at the top of your voice.
*You jump off the top of your house, and yell 'Nimbus' as you fall head first, expecting a floating cloud to come pick you up. (but it doesn't) 0_o
*You stand inside a circle of raging fire, then start yelling, claiming that the fire is an aura of pure energy from your strength.... until you run out, rolling around the floor as you try to put the fire, that has spread upon you, out.
*You start talking in Japanese, and begin to swear, calling everyone bastards.
*You try to escape from a tight situation by putting your hands to your eyes, shouting 'Solar flare', then flashing an incredibly bright torch in their face.
*You're scared that all women will shout at you whenever you do anything remotely wrong.
*You and a friend do the fusion dance in front of a bully, telling him that you will both fuse into one and becoming far stronger than even him, expecting the bully to be intimidated.
*You host a Tenkachi Budoki in your back garden, and grow a mini-afro on your head, then bribe all of your mates to lose against you purposely, claiming to be the world champion, and the strongest man in the world when you win.
*You cut your arm off, and try and show your friends that you are from the planet Namek, and "try" to regenerate it, with try being the keyword.
*You train in places with increased gravity....or at least you write the number '50', put it on your bedroom door, and start doing press ups, hoping to get stronger for the fight against Frieza.
*Whenever you can't blast your friends with a KameHameHa, you secretly pull a lighter out of your pocket, tuck it up your sleeve, then flick it so sparks fly off, seemingly out of your hand, as you claim that you are all out of energy.
*You shave your head, draw 6 spots on your forehead, cut off your nose, call your best friend Goku, use the word 'bro' a lot, and make your friends call you 'Krillen the great'.
*(chicks) You are really bitchy towards your son (your little freashman friend) and make him do his homework 24:7, then yell at him for saving the world when he fights off evil monsters.
*You laugh at your friends, and tell them that you know the secret to instantanious movement. When they throw a brick at your head, you try to disappear (Needless to say that you would fail, and have a severe bump on your head for a while)
*You make a big, fat, ugly pink plastecine man, call him Dodoria, and pretend to be Vegeta as you pull his fake arms backwards and taunt him (Even though he can't speak back, and you quite often rip his arms right off, must be the strength of a saiyan eh?)
*You talk in a sissy English accent to all your friends, and put your hair in a poofy braid, then use facepaints to paint your skin a light green, you die your hair green, then you get mad, and 'transform' into a monster (You tense all your muscles up, but pretend that you are a whole different being now)