urinal of the planets, n. — Green’s Dictionary of Slang

urinal of the planets n.

[a literary usage that reflects the country’s high rainfall]

Ireland.

c.1698		B.E. Dict. Canting Crew n.p.: Urinal of the Planets, Ireland, [...] because of its frequent and great Rains.
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.
1997		Share Slanguage.