Swimmers' 3rd Nipple. it is rumored that swimmers have a secret 'third nipple'. As legend has it, it makes them swim faster.
hah i bet he has an S3N.
by Traci Kim June 23, 2004
it's when a swimmer has a 3rd nipple to make them go faster! that cheater!
KEVIN'S a S3N!!!!!!!!!!
by Skidders June 24, 2004