Suetonius on Tiberius' Sex Life

[44.1] He acquired a reputation for still grosser depravities that one can hardly bear to tell or be told, let alone believe. For example, he trained little boys (whom he termed tiddlers^note[The Latin word, pisces, means "fishes".]) to crawl between his thighs when he went swimming and tease him with their licks and nibbles. Unweaned babies he would put to his organ as though to the breast, being by both nature and age rather fond of this form of satisfaction.

[44.2] Left a painting of Parrhasius' depicting Atalanta pleasuring Meleager with her lips^note[Parrhasius of Ephesus (c.440-c.380) was one of the most famous Greek painters. In Greek legends, Atalanta was a heroine, who met Meleager during the Calydonian hunt.] on condition that if the theme displeased him he was to have a million sesterces instead, he chose to keep it and actually hung it in his bedroom. The story is also told that once at a sacrifice, attracted by the acolyte's beauty, he lost control of himself and, hardly waiting for the ceremony to end, rushed him off and debauched him and his brother, the flute-player, too. Subsequently, when they complained of the assault, he had their legs broken.