Top Definition
Vulgar slang term for tribadism, the lesbian act of rubbing or grinding vulva-to-vulva for sexual stimulation. "Clam transfer" entered the national lexicon thanks to a wonderful Progresso Soup commercial first airing in 2010.
Sometimes when two lesbians love each other very much, they will engage in a clam transfer to physically express that love.
by The Other Guido February 25, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.