Another one - I hate it when people who have access to hygiene products opt not to use it. If you have the means, make the effort every once and a while. There aren't many reasons to go through life with teeth that look like they have yellow-brown shag carpet on them, or smelling like week old pizza in a full trash can, or having breath or BO that smells like a mix of mothballs and old cigarettes and shit (all real examples from when I was a student at UNH).
"I was thirsty for everything, but blood wasn't my style" - Live, "Voodoo Lady"