You can be conversing with a bad person at any point in real life. Do you know what the cashier at the store does when they are not there?
They smiled at your joke, maybe you've entertained rustlers, cut throats, murderers, bounty hunters, desperados, mugs, pugs, thugs, nitwits, halfwits, dimwits, vipers, snipers, con men, Indian agents, Mexican bandits, muggers, buggerers, bushwhackers, hornswogglers, horse thieves, bull dykes, train robbers, bank robbers, ass-kickers, shit-kickers and Methodists without even knowing it.
Same thing online