It's Barack Obama who chugs slowly forward like a middle-aged salaryman, cautious and halting.
Just prior to the contest, he chugs an entire bottle of castor oil and tops it off with an egg.
What fun it must be to have a boat of your own that chugs about those entertaining seas!
He got three chugs and a backfire into the carburetor, and after that silence.
After a number of loud wheezes and chugs the boat started down the river.
1866, echoic of a working steam engine. As a verb, from 1884. Related: Chugged; chugging. Drinking sense attested by 1940s (chug-a-lug), probably imitative of the sound of swallowing.
To drink very quickly and in volume, as alcohol: chugged six milks at lunch
To move along, esp slowly and laboriously: The USS Saratoga came chugging up the Delaware
[1900+; echoic of an engine, esp a steam engine, operating]