On a sense of Milton's Humour

Excess Learning without understanding may induce brain farts. 

Of knowledge within bounds; beyond abstain [ 120 ]

……

Anough is left besides to search and know. [ 125 ]

But Knowledge is as food, and needs no less

Her Temperance over Appetite, to know

In measure what the mind may well contain,

Oppresses else with Surfet, and soon turns

Wisdom to Folly, as Nourishment to Winde. [ 130 ]

(Paradise Lost, John Milton, Book VII)

The Archangel Raphael advising Adam that continuous learning without seeking understanding is like unto  continuous  eating without digestion.  This is often the cause of indigestion. This may cause one to produce methane from the bowels, commonly referred to as farting. .....

(It seams even John Milton has a sense of humour.)

http://www.dartmouth.edu/~milton/reading_room/pl/book_7/index.shtml

Surfet > Surfeit;

Excess; specifically (and now usually), excess in eating and drinking; a gluttonous meal by which the stomach is overloaded and the digestion deranged.

(http://www.wordnik.com/words/surfeit July 29,2011)