A person who is always in the way, always slowing down others around them. Examples: The person who writes a check at the grocery store, waiting until the cashier gives them the total before even beginning to write the check; the person doing the speed limit in the passing
lane, holding up traffic and forcing everyone to pass them on the right; the person ahead of you in line at a
government office who can't fill out a simple form, and takes 10 minutes for the clerk to serve instead of the
normal 30 seconds.
I got stuck behind a speed
bump at the grocery store yesterday. Asshole wrote a
check and waited until their groceries were rung up before even starting to write the
check.