Come to think of it, I wasn't the only one who needed supplies.
Laurel - bless her heart - didn't find anything wrong with brushing her teeth or shaving in Mexico. While normally I would be happy about her brushing her teeth and shaving her legs.... Americans can't use Mexican water for such things. Mexico has "lower standards" than we do in the US and us Americanos can get sick from their water.
So we got her nice and drunk and told her about how sick she was gonna be for the rest of the trip.