Schlongster is an extension of the word schlong. Schlongster is a word used to describe someone, who excessively uses their 'schlong'. This word is also to be used as an insult against someone, who you think is particularly annoying. Schlongster is a newfound generational word, used by the most persistent and admired men and women. The word "schlongster" shall be used carefully and only in certain cases where you have earned it.