E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Isthmus of Suez.
The covered bridge of St. John’s College, Cambridge, is so called, because it connects the college with the grounds on the other side of the river. Suez here is a pun on the word sus (a hog), the Johnians being nicknamed hogs in University slang.
