The term love guru Suzuki uses to describe the perfect moment to kiss an Underground Resident. Most have randomly set Viva moments, but some require Poor Boy to perform certain actions.
The most unusual requirements for getting an Underground Resident to perform Viva include spinning on a jungle gym, jumping off of a ledge, sneaking past the same person an incredible number of times, sneaking after an assassin, playing red light-green light and follow the leader, arriving from the Bathhouse "naked", taking care of one resident to please another, and the list goes on.
None of the above-ground characters have Viva moments. Kisses are scripted upon meeting certain requirements.