Green’s Dictionary of Slang

peter n.4

also pete, petey
[joc. use of proper name + initial letters]

[mid-19C+] the penis, esp. of a young boy.

In compounds

peter-beater (n.)

[1980s+] (US) a masturbator.

peter-eater (n.) [eat v. (4)]

[1920s+] (US) a male homosexual fellator; a heterosexual fellatrix.

peter-meter (n.) [popularized by Screw magazine in the late 1960s, when it was used as part of reviews to assess the degree to which a pornographic film or book was arousing]

[1960s+] (US) a notional means of measuring the size of a penis, or the excitement it is experiencing.

peter-pitching (adj.)

[1930s] of a man, sexually active.

peter puffer (n.) [SE puff, to blow, i.e. blow v.2 (1c)]

[20C+] (US) one who performs oral sex.

peter-puller (n.)

[late 19C+] a masturbator.

peter-pusher (n.)

[1960s] (US black) a man who has sexual intercourse.

In phrases

peddle one’s peter (v.)

[1970s] to work as a homosexual male prostitute.

pitch the peter (v.)

[1930s] of a man, to have sexual intercourse.