vowed during an illness of Caligula, to sacrifice his life, if the emperor recovered, expecting to be rewarded for his devotion. But when Caligula got well, and Afranius was unwilling to fulfill his vow, the emperor had him decked out like a sacrificial victim, paraded through the streets, and then hurled down from the eminence (ex aggere) by the Colline gate. (D. C. 59.8; Suet. Cal. 27.)
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890