Someone who normally considers themselves heterosexual, yet when under the influence of distilled spirits (and sometimes boosted by cocaine) occasionally find themselves with a mouthful of cock.
"That Barney is always getting lucky with the ladies, but I heard that if you get him tatored enough, he turns into a vodka induced cockgobbler!"
A person or object who performs or wishes to perform fellatio is also known as a cockslobber or one who slobbers cock. Humorous, flattering or grossly insulting; use with caution.
"Oh honey, you are such a sluttly little cockslobber. Will you marry me?""