A blanket noun used to depict a person who has
disappointed the accuser in some manner. Common uses include: when an individual exhibits imprudent, contingently
unintelligent, foolish behaviour; describing individuals or groups of individuals who are prone to exhibiting generally unsavoury behaviour; a meaningless exclamation in frustration (similarly to how vulgar swear words are used by the lay on a daily basis).
The word itself, however, is more of an idiom or an exclamation; akin to the French “alors” or the English: “Rahhhh”.
It’s versitility is also evident through the substitution of words into remdog in order to further define the word. Examples of this include: “Rembitch” (someone being bitchy), “Remtrain” (someone who has so much promise but repeatedly dissapoints by being late, dirty and generally a bit crap - much like British
public transport), “Remfawks” (someone who tries to blow up Parliament) or “Remdoge” (a posh Remdog).
Really remdog can mean what you want it to be so.... yeah