>>1Back when imageboards were new, post numbers were unpredictable and mysterious so getting a row of significant/similar digits at end was considered a GET(e.g. 40M get=post #40000000 see
https://www.lurkmore.com/view/4chan_GET_Encyclopedia ) and the post became famous. Later the practice devolved to getting quads (4 numbers in a row), trips("first to get trips names my dog") and last of all dubs(having the least impressive 10% occurence) - later appropriated by /pol/ and frog worshippers.
The autists here parodied it by pretending fixed thread numbers are the same as global board numbers and that with low amount of posters, a single autismal shitposter can "steal all the dubs"(worthless in terms of rarity in principle, as this board posts are numbered sequentially for each thread).