Green’s Dictionary of Slang

shake hands v.

In phrases

shake hands with an old friend (v.) (also shake hands with the baby, ...the fellow who stood up with me at my wedding)

[1960s+] to urinate.

shake hands with the governor (v.)

[1990s+] to masturbate.

shake hands with the unemployed (v.) [1960s+]

1. to urinate.

2. (also shake hands with the bloke who enlisted with me) to masturbate.

shake hands with the wife’s best friend (v.) (also shake hands with one’s wife’s best friend, give the wife’s best friend a shake) [wife’s best friend under best friend n.] [1960s+] (orig. Aus.)

1. to masturbate.

2. to urinate.