Well I saw an encounter where suddenly the host called the guest a liar, did not give the guest a chance to reply to that accusation, and kicked the guest out.
And...?
Again: that's simply the chance you take, walking about inside of someone else's house. No entitlements; no guarantees.
(... and, of course: said guest might very well have been a liar; and one's host, in such an instance, is in no way required to coddle such, upon discovery of same. Doe-eyed sympathies offered towards the offending party, in such cases, are plainly misplaced ones.)