Green’s Dictionary of Slang

1. (also whip away) to drink greedily.

1696		Motteux (trans.) Gargantua and Pantagruel (1927) II Bk V 520: Drink on sirs, whip it away [...] fear not we should ever want good bub, and bellytimber.
1725		New Canting Dict. n.p.: whip off to drink cleverly.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. 1725].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1812–82		B.M. Carew Life and Adventures.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. (UK Und.) to steal.

c.1698		B.E. Dict. Canting Crew n.p.: Whip off, c. to Steal.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1812–82		in B.M. Carew Life and Adventures.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

3. to run off.

1773		O. Goldsmith She Stoops to Conquer Act V: So if your own horses be ready, you may whip off with cousin.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1812–82		in B.M. Carew Life and Adventures.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1969		E. Leonard Big Bounce 38: She sat quietly while Ray and his group whipped off to Chicago to attend the dumb meeting.

4. (US campus) to masturbate.

1975

G. Underwood ‘Razorback Sl.’ in AS L:1/2 69: whip off vi Masturbate (of a male).