gatecrash

Etymology

gate + crash

verb

1. To attend a social event without having been invited, or without having paid.

noun

1. An instance of gatecrashing a party, event, etc.
2. (Asian English) Part of a traditional Chinese wedding ceremony in which the groom and his groomsmen complete several difficult or embarrassing tasks prepared by the bridesmaids to prove his love for the bride.
   We’ve heard of stories of grooms getting nervous before their big day – not because they’re afraid of botching their vows, or welling up in unmanly but happy tears – but because of the tasks that await them during the gatecrashing ceremony. 2015-10-05, Felicia Tan, “Modern alternatives to wedding traditions”, in Her World Brides Singapore, archived from the original on 2017-10-14
   For their wedding day, Mr Koh, who's 33 and works in marketing, arrived at his bride's house for the gatecrashing ceremony wearing a Darth Vader mask, while his groomsmen were decked out in Jedi robes. 2015-12-15, Lisa Twang, “Star Wars weddings hit Singapore”, in The New Paper Singapore
   During the 30-minute gatecrash, Mr Lee and his groomsmen did challenges such as forming a human pyramid and dancing to pop tunes such as Britney Spears' Toxic. 2016-06-12, Benson Ang, “Gladiator groomsmen”, in The Straits Times
   Madam Quek says: "Because my husband and most of the groomsmen are not Chinese, it was their first time experiencing a Chinese wedding gatecrash." 2016-11-06, Kimberly Lim, “Wedding gatecrashers: Putting love to the test”, in The New Paper Singapore