Formerly used as an onomatopoetic expression to describe the sound of laughter in '60s theatrical jargon.
A decade later was used as an expression of distaste, disgust, or revulsion by people who attended comedy clubs, probably due to the disgusting nature of the jokes told in a more vulgarity-tolerant society. Can also be used in its adjective form, yucky.
i. The phrase "yuck it up" was a way of mimicking laughter in '60s theatrical jargon. It was also used to describe the sound of laughing at comedy shows.
ii. A decade later, yuck became an expression of distaste or disgust, maybe due to the vulgarity of the jokes in the aforementioned comedy clubs.
Note: can also be used in adjective form, i.e., yucky
See also blech, ick, icky, ack, yech, blech, blah, bleh, yucky, hyuck & ew
1. (v) to vomit, barf, blow chunks, toss out last night's salsa
2. (v) a normal male's response after meatin' the skin taco or shakin' the tree
3. (n) the visible, often messy product of either the above actions
1) I just yucked in the barf bucket in the basement.
2) I pulled out and yucked all over the bed.
3) Get that yuck outta here, I'm tryin' to eat.