foam (\'f?m\): a light frothy mass of fine bubbles formed in or on the surface of a liquid or from a liquid as: a : a frothy mass formed in salivating or sweating b : a substance that inundates SigEp's basement this Friday, August 9th starting at 11pm. FOAM PARTY SigEp BringIDsFriday@11PM DJ Knightlite Co-sponsored by 2015 Class Council and Programming Board