Urp.
Singing the bucket aria.
Woof yer cookies.
I have heard boating enthusiasts refer to “feeding the fish” in an understated sort of way.
Tris
This is a list of common terms among my friends over the years. Many have been covered already.
Feeding the Fishes: Navy and Sailing
Upchucking
Puking
Power Puking
Praying to the Porcelain God: Repetitive vomiting into the toilet bowl.
Tossing your Cookies
Beer drinker’s diet
Blowing Chunks
Ralphing
GIGO: one Linux geek I know that is a big beer binger uses this term. It is of course, Garbage In Garbage Out.
Jim
The Big Spit
Shouting “Hughie”<<<<<<< say that loud. you’ll unnerstand
I always kind of liked “Involuntary personal protein spill.” 
When on a boat: calling whales
Variant of two aforementioned: ordering buicks on the big white phone
Delivering street pizza.
[QUOTE=pravnik]
Delivering street pizza.
[/QUOTE]
Love it. Would that be hand tossed?
My favorites:
[ul]
[li]Blowing chunks[/li][li]Eating backwards[/li][li]Hurl[/li][li]Spew[/li][li]Technicolor yawn[/li][li]Tossing one’s cookies[/li][li]Upchuck[/li][/ul]
[QUOTE=winterhawk11]
I always kind of liked “Involuntary personal protein spill.” 
[/QUOTE]
Haha! So what do you call a voluntary personal protein spill?
[QUOTE=Pygmy Rugger]
Haha! So what do you call a voluntary personal protein spill?
[/QUOTE]
THAT we call bulimia nervosa.
I always liked “calling dinosaurs”.
Just imagine what the mating call of a T-Rex sounds like.
[QUOTE=Green Bean]
Not me. I’m classier than that. I’m gonna call it the “vomit vahze.” 
My family spent a lot of time on boats. We called it “looking for Ralph,” because you’d lean over the side of the boat and call out “Ralph! Ralph! Ralph!”
And on an international note: I understand that in the land down under, women blow and men chunder.
[/QUOTE]
Man, I always though it was women glow…
We use the term ‘booting’ as in ‘As soon as the driver pulled over, I opened the door and booted everywhere.’
I like ‘tossing one’s cookies’ though.
My personal fave:
Excuse me, I have to place a call to Europe.
YUURRRUUUUPPPPP!
And still nothing better than “Calling Ralph and Huey on the Big Porcelain Phone.”
Another mild euphamism I used to hear was “Sharing his lunch.”
Tris
Ever since I saw the chocolate Scharffen Berger, I’ve thought that was a great euphemism for hurling.
“Dude, I had a rough night last night - I scharffenbergered all over this chick!”
I’m voting for
sislatsirep
Si