sidewalk shuffle 

sidewalk shuffle

the awkward dance that results when two people approach each other from opposite directions, each attempts to move out of the other's way, and both end up moving in the same direction. Often followed by further ungainly movement, apologies, and awkward laughter.

Ugh, I just ran into Prof. Smith in the hall and we did the sidewalk shuffle. It was so awkward.

sidewalk shuffle by english15 July 22, 2009

sidewalk souffle 

The result of someone falling or jumping off a tall building.

"All units, sidewalk souffle at 35th and Shields. EMTs en route."

sidewalk souffle by Lou Stools February 17, 2013