Syrup it is a kind of medicine which contains a lot of sugar in its composition, is a term derived from Arabicsharab (which means syrup or potion). Syrup is also a slang widely used throughout Brazil, to designate both a boring person, as someone who deserves admiration.
There are many syrups made for the purpose of curing a wide variety of ailments. Many syrups are homemade, being prepared with various natural products. herbal tea (herbal-based medicine) and licker (which has this name because it is very sweet) are some synonyms for syrup.
Figuratively speaking, a syrup person is very annoying, tiring, syrupy, and usually complains about everything. The syrup is that individual who is not well regarded by his friends, but he insists that everyone likes him. Syrup is also the designation of an upset situation, a bad moment that has occurred, and receives that same name, as it is related to medicinal syrup, because sometimes syrups are difficult to Swallow.
Syrup is also used as a form of admiration, saying that a person is syrup is not necessarily derogatory, it can be related to saying that the individual is really good at what he does.