A technique employed by ignorant and/or terrified drivers when merging onto a freeway: instead of accelerating to merge into faster traffic, these drivers actually stop and attempt to cut into oncoming traffic from a complete standstill. The "stop n' merge" is a dangerous maneuver.
I almost got in an accident today because some clown decided to pull a stop n' merge in rush hour traffic.
by SLampy January 6, 2006