Praxe

Coimbra's Queima das Fitas parade. Nearly graduated medicine (orthodontology in this particular case) students and their decorated float.
Freshman being "baptized" by older students

The Portuguese term praxe ([ˈpɾaʃɨ] derived from the Greek πρᾶξις, praxis), refers to the entirety of student traditions at universities, particularly the initiation rituals that freshmen undergo at some Portuguese institutions.