Gatecrash is a term used to describe the act of entering an event or gathering without an invitation or permission. This can occur at parties, concerts, or other social events where access is restricted to invited guests. Gatecrashers often seek to enjoy the festivities without having paid for a ticket or being on the guest list. The practice of gatecrashing can lead to various consequences, including being asked to leave the event or facing legal repercussions. Event organizers often implement security measures, such as guest lists and ticket checks, to prevent unauthorized entry and ensure the safety and enjoyment of invited attendees.