This is a late 80's or early 90's movie about three or four kids who take oof on there bikes to go camping in the woods by the lake. There is a scene in which a heavy set boy has just gotten out of the shower and is eating a candy bay and driving a remote control car while singing "THE WANDERER!' Please help:

This could be the 1991 opus Little Marines (http://www.imdb.com/title/tt0380500/).