When someone walks into someone's party or any event without being invited, he/she becomes a ‘gatecrasher'. The word "Gatecrasher" is a noun. It is very common in marriage parties when gatecrashers dress up well and enter into the party. In movie "3 Idiots" also you must have observed the same thing. Aamir Khan, along with his 2 friends, entered into the marriage party to relish the food but realized after sometime that it was his principal's daughter's marriage!
1. We ran out of food in the marriage party as there were too many gatecrashers.
2. They thought of teaching a lesson to the gatecrashers.
3. Earlier we were thinking that they were from the girl's side but we then realized that they were gatecrashers.
4. I had invited only few people but can see a lot of crowd. I think there are many gatecrashers too!
5. In our student life, we once became gatecrashers and entered into the marriage party!