I think it's bug type because SYL is an acronym for "see you later", as in a nice way of saying "you're bugging me". Now that gamefreak has used up all of the cultural reference and mythologies of the past, it's going post modern and using contemporary internet slang. Genius!
I hope to god you're kidding with this line or:
No, it hasn't.
I'm as serious as those mythologies.
That line can be taken many ways.
What is a mythology?
Nothing but a miserable pile of secrets.
Only insecure and ignorant people try to debase someone online based on their username.