Pulling a sen is a temporary lapse in attention that normally results in an embarrassing incident. This can happen anywhere at any time. Normally occurring in internet chat rooms or multiplayer games. It can also happen while driving or other various physical activities.
A driver veers off the normal path while waving to get the attention of another driver and almost crashes. The driver of that car was just "pulling a sen".
by PDSKYPE June 23, 2009