where do....

Co-worker's desk, one at a time. Sometimes on the desk, sometimes on the floor, sometimes in the trashcan. Mix it up, have fun with it.
 
I'm surprised no one told him to just keep reusing the same one, that way you don't have any to throw out.
 
This depends on your city's laws by the way. Where I live, as long as it is in a puncture-proof container and labeled properly it can be disposed of in the trash. I purchase the $5 dollar sharps containers from Walmart and toss em in the dumpster after I seal the lid. Just an FYI. ;)

Edit: I figured I'd paste what my city has to say for guidelines:
  • Place all needles and syringes in a secured puncture proof plastic container with a screw-on lid (for example: a rigid detergent, bleach or fabric softener bottle).
  • Clearly label the container ***8220;NON-RECYCLABLE***8221; and dispose of it in your trash container.
  • Once filled to no more than 2 inches from the top, tightly secure the lid and reinforce with duct tape.
  • Place the container into your trash; do not place this container in with your other recyclables.


What I do
 
Back
Top