After the wedding both men get invited on a trip with the brides family because the family becomes pretty fond of both men despite the fact that nobody exactly knows where these men derived from. Even though Jeremy tags along on the trip he feels as though John is breaking the rules they originally came up with to catch some girl which is not cool. Claire (Racheal McAdams) and John began to have chemistry that is evident to the whole family including Claire's fiancee Sack (Bradley Cooper). Sack doesn't appreciate John attempting to make moves on his fiancee so he does research about John and Jeremy. As soon as Sack found out all the evidence he needed on the two men he made sure to tell the whole family leaving John and Jeremy pressed with a reasoning to why they were even there. Lies couldn't save John or Jeremy and with that the family kicked both men off of the trip. Throughout the trip Jeremy also falls for someone himself and breaks the rules Claire's sister Gloria (Isla Fisher). While John was chasing after Claire all the time Jeremy and Gloria were flirting here and there themselves.
John becomes love sick after being casted away by Claire's family and doesn't know how to handle possibly missing out on the love of his life. Eventually Claire and John meet again and actually talk about what happened and why. With Claire not truly loving her fiancee and having love for John made her decision of leaving Sack easy. Both men found love and began to engage in true mature relationships. I'm sure John and Jeremy never thought that one particular wedding would change their lives for a lifetime.
The symptomatic meaning behind wedding crashers is the social context of believing that to be looked up to as a man you can't be faithful in a relationship. These men in this movie look at crashing weddings and sleeping with bridesmaids as something that is "cool" and "fun". In reality growing up and becoming a real man does not include this type of actions. The two women (Claire & Gloria) change the whole perspective of how these men view women. Although the process of how the men got to that point was out of the ordinary, it still happened and both men learned to appreciate and value women in a better way than before.
Sources:
Vaugh, Vince, and Owen Wilson, perf. Wedding Crashers. 2005. New Line Cinema. DVD.
IMDb. N.p., n.d. Web. 1 Dec. 2011. <www.imdb.com>.