The only time I've been in this situation was sitting a curb where the right lane was also the turning lane for a freeway onramp. Less than 10 seconds before the light changed, a car pulls up behind me and honks. I look back at the driver, who is motioning for me to move; I notice the light is about to change and stay put. Driver gets pissed, moves closer, honks again, light turns green and I go. There was plenty of room to go around me if the driver was really in dire need to go, although the free way was clogged up with rush hour traffic anyway.

When there is no right turn lane, I generally move way up to the front which tends to give enough room for those behind me to turn right. Occasionally, for varied reasons, I sit on the curb which blocks right-turners. Most commonly I am hitting the crosswalk button and a driver pulls up behind me. It's awkward to reposition within the intersection in this circumstance, so there I wait, and overall no gets pissed, although one of those blocked right-turners probably went home, complained to the wife/husband, then got on bf to complain about me being a dick.