Sentence:  Madam Quek says: "Because my husband and most of the groomsmen are not Chinese, it was their first time experiencing a Chinese wedding  <WSD>gatecrash</WSD>." 
Meaning of the word marked with <WSD> tags:  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.