The act of spitting out beer/liquor/other alcoholic beverages upon attempting to chug any amount of them.
Yo man, Jeff just tried chuggin that Mickey's but that punk spit up!
Spit up (or past tense, spat up) is a small bit of puke, usually the size of a quarter, but very rarely bigger, that would be classified as vomit. Typically happens in vurps or in very light nausea stages.
I just burped.. and I tasted a bit of spit up
When you say something you dont mean without knowing your saying it
I challenge you to make your own example of Verbal Spit-Up! Good Luck!