Green’s Dictionary of Slang

reeb n.¹

beer.

1859, 1860		Hotten Dict. of Modern Sl. etc.
1861		(con. 1840s–50s) H. Mayhew London Labour and London Poor I 11/2: You’ll stand a top o’ reeb?
1873		Sl. Dict.
1882		Sydney Sl. Dict. (2 edn) 11: Reeb - Beer.
1890		Northampton Mercury 12 Apr. 12/4: ‘Shif,’ fish; ‘torrac,’ carrot; ‘yad,’ day; ‘kool,’ look; ‘sey,’ yes; ‘on’, no; ‘pac,’ cap; ‘reeb,’ beer, ‘yob,’ boy; are all perfect specimens [i.e. of backslang].
1923		Northern Whig 12 Sept. 8/6: In some parts of the East End of London the coster class [still] say ‘occabot,’ [and] ‘reeb.’ A boy is still a ‘yob,’ a woman a ‘namow,’ and a girl an ‘elrig’.
1933		‘William Juniper’ True Drunkard’s Delight 228: If you particularly call for beer you may take your choice of reeb [...] or gatter.
1977		D. Powis Signs of Crime 198: Reeb Beer (London backslang).
1997		Eble Campus Sl. Fall 7: reeb – beer: ‘Going to the bar to get me a couple of reebs.’ [...] from The Simpsons.