Can i get banned for sharing a youtube link

Nope, but you can get punished for being a jerk. Why antagonize your jungler?

unless it's porn or something i doubt it and even if it's something like that it's still unlikely

now ofcourse if you do trigger someone enough that they post the link in the report ticket and send a support ticket as well you might

Back in the days, there was this guy posting the song Uninstall from the anime Bokurano. The meaning was obvious, but it's actually a pretty good song and who knows what happened to the guy.

Go listen to Zebra's Cover Version if you want to hear some good vocals on the song.