Bonjour timothy (1995)

Timothy and his family is expecting a French-Canadian male exchange student, that turns out to be an attractive girl, to which Timothy proceeds to make a fool of himself, trying to impress. When Michelle becomes ill from drinking spiked punch at a party, Timothy notices a tattoo while helping her to bed. He foolishly tells a friend about the tattoo, who proceeds to tell the whole school, which does not go down well with Michelle.