Green’s Dictionary of Slang

rolling-pin n.

the penis.

[1617		Middleton & Rowley A Fair Quarrel IV i: May thy roll rot, and thy pudding drop in pieces, being sophisticated with filthy urine].
a.1690		‘English Fortune-Teller’ in R. Thompson Pepys’ Penny Merriments (1976) 70: [Such lines] usually signifieth a man to tread more hens than his own, and a woman to beat her puff-past with her neighbours rowling-pin.
1790		‘Bumper Allnight. Esquire’ Honest Fellow 30: Then down on the dresser young Dolly he laid / [...] / He kneaded her dough with his own rolling-pin.
1837		‘Chapter of Smutty Toasts’ Icky-Wickey Songster 10: Here’s what they all like, which is man’s rolling-pin.
c.1850		Peeping Tom (London) 12 48/3: [advert] jolly companion — New Rolling Pin.
1890–1904		Farmer & Henley Sl. and Its Analogues.
c.1900		‘Ramrod’ Nocturnal Meeting 60: Still holding his cock [...] altogether look-like a rolling-pin.
1945		in G. Legman Limerick (1953) 204: He crammed the small crease / ’Twixt the legs of his niece / With a foot of his old rolling pin.
a.1969		‘The Jolly Baker’ in G. Logsdon Whorehouse Bells Were Ringing (1995) 262: I’ve got the biggest rolling pin of any man in town.
2002		rtw132 Maureen’s Lusty Confessions 🌐 My kisses are as warm and delicious as moist cookies pounded by your rolling pin and freshly baked in an oven of fiendish ecstasy.