Definition of "chunder"

I had puke streamers hanging from both nostrils; it wasn′t as watery as my chunder usually is (from drinking).

1996 April 24, Andrew Shore, “Nose Chunder (was Re: Grogan Epidemic at ERR)”, in alt.tasteless‎ (Usenet)

I would guess it points up the difference between the involuntary chunder where you cannot choose the time place or direction, and the self-induced chunder which facilitates further consumption of alcohol after your theoretical limit is reached.

2001 September 9, John Dean, “‘chunder’”, in alt.usage.english‎ (Usenet)

I come from a land down under / Where beer does flow and men chunder / Can't you hear, can't you hear the thunder? / You better run, you better take cover

1980, Colin Hay, Ron Strykert (lyrics and music), “Down Under”, performed by Men at Work

There are plenty of winding roads, diesel fumes, crowded public transport and various less than sweet odours to get you chundering when you′re on the move in this part of the world, so take a good supply of motion sickness remedies if you know you′re susceptible to this.

2008, Isabelle Young, Tony Gherardin, Central and South America, Lonely Planet, page 70

“You might have chundered,” said Kate, laughing, “but at least you didn′t get any on yourself—sign of a true lady.”

2009, William Efford, Picaroon‎, page 313

Pretty soon just about everyone onboard was leaning over the rail chundering like sick dogs.

2010, Norman Jorgensen, Jack′s Island‎, page 3

The truck chundered and rattled.

2005, Robert Newman, The Fountain at the Centre of the World‎, page 114

As their rented van chunders along the highway, John′s voiceover is heard, contemplating the compulsion that drives men to continue using juvenile punk monikers into their mid-thirties.

2007, George Melnyk, Great Canadian Film Directors‎, page 215

He taxied his plane carefully to the end of the strip and then went further on, into the rough grass. Then, with full flap and maximum throttle, he came chundering along towards us.

2008, Jill Dickin Schinas, A Family Outing in the Atlantic‎, page 156