What is Res Vom?
1.
"residual vomit"
vomit that is found -- usually in small quantities -- in the general vicinity surrounding the actual spot of the vomit
Allie: My foot is wet.
Peter: Did I spill my drink again?
Allie: Don't think so. Wait... don't tell me it's Mark's vomit?
Peter: It shouldn't be. He puked in the sink.
Seetha: I think Allie might have stepped in some res vom from when he was walking over to the sink.
Allie: GROSS!!!!!!!!!!!
Peter: EWWWWWW!!!!!!!!!!!!
See