People on public transport who are sleepy or lazy often rest their heads against the window, "head smear" is the blurry vaseline like substance left on the glass that comes from the oil and grease in their hair.
"Would ya look at that view! It's beautiful!"
"Guh, makes me wanna vom. Some dirty chump has left head smear all over this side, and I'm not wiping it down."
"Heya honey, what? ... I'm not sure what station I'm at because there's head smear everywhere and I can't see the platform."
The identity of a foam dart collector is revealed as soon as a few shots have been fired, they scrabble around on the floor and grab them like addicts. Refilling clips and chambers bring them a great deal of comfort.
My cat is a nerf herder. Like Hannibal Lecter, he doesn't keep trophies. He eats them.
The tomahawk once used by native Americans as a charming throwing axe and scalping tool, lost popularity over the years since fire-arms became cheap and accessible. They have recently made a comeback due to their presence in "Call of Duty" where fanatics delight in making unlikely kills by tossing them huge distances, but only in the virtual world. Actual tomahawks carry hefty punishments if used to attack someone. The Vomahawk is the modern and much less lethal equivalent projectile, composed of regurgitated matter rather than wood and flint.
You come near my house and I'm gonna wet your neck with a vomahawk.