to kiss, (implied to be with a lover)
If he tried to swap spit with your sister and he had something like that, he really must be dense.
by The Return of Light Joker November 24, 2009
Can you define these popular missing words?
to French kiss; to snog
We'd park by the lake and just swap spit for hours. Swapping spit is so much fun.
by mandingoe May 24, 2004