Acapulco, Last Beach... on the Left(1983)

Gigi and Andrea are two thirty-something slackers who still live off their parents and dream of spending an adventurous holiday on the beaches of Acapulco. Given their meager finances, however, they have to settle for Cesenatico and the shabby guesthouse run by Gigi’s aunt. There, the two embark on countless attempts to pick up women, only to fail miserably every time.