The Mikayla Chronicles (2009)

Erica and Rob are fun loving filmmakers and naturalists. During a routine weekend in the mountains, their ATV breaks down, leaving them stranded. But with only enough food and water to last one day, their weekend of fun soon becomes a hilarious challenge to survive and find their way home. They occupy themselves with positive thoughts SEX! As their resources dwindle, a grave question emerges... will they laugh themselves to death?