a lesbian sex act which involves a certain mesure of flexibility. its rubbing and bumpung vaginas together
by minghi May 17, 2003
bumping clams refer to the opening of a clam shell, revieling the clam and bumping and grinding with another "clam" or clitoris until the friction generates a pearl....or an orgasm.....depends on whether we are talking clams or clitorises....
by the queen bee October 05, 2006