so at kame house, gohan is witness to a kiss between krillin and 18. it's short and sweet and gohan notices how happy krillin looks afterwards. of course he knew what kissing was, but he'd never actually seen one happen that he remembers. he wonders if it's really that nice. day or so later, gohan and dende are hanging out at the temple, laughing together, and in a moment of pure happiness gohan sees dende smile and laugh so freely and openly that he's overcome by affection and impulsively gives him a kiss, but backs away the moment he realizes what he's doing. dende, unfamiliar with most human customs, is confused but slightly blushing at the sudden physical touch. gohan is very embarassed and quickly yells "SORRY GOTTA GO BYE!!" and flies away, leaving dende even more confused.