A variation of hide and go seek where once a person hiding is seen, has to rush back to the base where the seeker started counting, and say 1-2-3 the seekers name in order to be safe.
Origin: Chestnut ave, Palo Alto, CA
"Hey, wanna come play 1-2-3 hide and go seek with some people at the park tomorrow?"
by Shnarb roberts November 11, 2008