A write-up on this topic typically touches on the following areas: Social Dynamics and Party Crashing
These crashers operate on a simple thesis: If I am not wearing pants, you will be too awkward to ask me to leave. And sadly, it works. It creates a vortex of social anxiety where the host would rather ignore the guy in the corner commando-style than cause a scene. party crashing pervs going commando 2024 b updated