1 - When someone becomes obsessed with the
Jonas Brothers
2 - When somebody puts a bunch of
Jonas Brother quotes or posters or other such JB things on something or someone
It's pretty much when the
Jonas brothers "Pone" (not Pwn) someone/thing either directly or through their fans.
Example 1 - Girl 1 - "Wow, Alicia's room is filled with JB posters"
Girl 2 - "Yah she's totally been Jonafied"
Example 2 - Girl 1 - "Did you see the third stall
from the door in the girls washroom on the
second floor?"
Girl 2 - "YES! Stacey was in there
yesterday and she totally Jonafied the walls! The janitors were all like 'Yo that's illogical, I can't have it'"