Yak up slang
To bring something from the stomach back out through the mouth.
The smell of this room makes me want to yak up.
John yakked up his lunch after that car ride.
To speak continuously or for a long time (about something).
John is always yakking up his plans of becoming a poet, but he never writes a single poem!
He yakked up about his job until I finally interrupted him and told him I had to leave.
To vomit
Someone has vomited.
1. To laugh with shyness and embarrassment
2. Used to say that someone vomits on the floor, whether it's carpeted or not
To spew or vomit
The verb "yak" must be conjugated according to its tense.
The second meaning dates from 1950.
Come out of a difficult situation without a stain on one's character
I don't understand how he can fall in shit and come out smelling like a rose.