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"Homeopathic" (see placebo) remedy for headaches that is applied directly to the forehead.
Headon, apply directly to the forehead!
Headon, apply directly to the forehead!
Headon, apply directly to the forehead!
HeadOn by iamplasma August 12, 2006
Related Words

Hadon'care 

The most dopest thing you can text back if a girl texts you something boring.
Boring Girl: I just bought a new bed for my cat!

You: Hadon'care
Hadon'care by TinglyWiener January 10, 2013

Headonya 

The just got out of bed look. The morning after a heavy night. A form of greeting when you see the people you party with. If you see someone off their face say "Headonya!"
Hey! you've got a bad headonya. Just say " Headonya" when you see friends.
Headonya by Dofb July 27, 2010

Thomas Headon 

The king who vibes so hard the whole room shakes
"whoa, Thomas headon vibes so hard"
A product sold by a company which is based on the belief that the key to successful television-based advertisement is annoying the viewer to point of significant resentment and disgust. Their commercials also have the shittiest graphics that have ever been shown on television.
(from one of their more recent commercials)

Fat Nasty Beaner Woman With Dirty Hair - "HeadOn. HeadOn! HeadOn!! You're commercials are annoying, but I LOVE your product!"

Corny-Sounding Soccer-Mom Lady - "HeadOn is now available without a prescription"
HeadOn by Jeph tha 5'9/ssj4vegeta January 8, 2008
As stated by Jimmy Kimmel, a commercial that actually makes you buy the product because the commercial actually gives you a headache itself.
HeadOn. Apply directly to the forehead.
(Repeat until infinity.)
headon by D-Miles September 30, 2006