Originated from the Latin "kisus dicus"
Discribes the process of the penis being intermittently kissed while the female is trying to get comfortable in the lead up to a full blown headjob or Russian kiss.
Time frame : varies from a few seconds to sometimes minutes.(Site dependant).
Usually very pleasant but very often not noticed due to anticipation of the later

When two dudes are sword-fighting and when they are both about to CUM they touch dickheads, simulating kissing. Then the man mess ensues.