I've been seeing the numbers 7 and 13 in various combinations for the last five years or so. What could it mean?
You've been in math class
Such entities vanish extremely ninja-like. Three hounds ingest revolting things, engaging eons now.
It's getting cold, isn't it?
You see all the combinations of numbers, but you see "more" those numbers because your brain pays more attention to them. It's psychological.