Really simple a funny skin idea for olaf but one could dress him up really funny basically kinda like a troll lol, could make some really funny voice lines like

you mad?
not even close baby

and his laugh could be trololololol if you guys could use the same voice actor from riot that did brolaf it would be perfect!!!

Trolololaf approves.

I vote we just make a skin that turns Olaf into a Giant Stick of butter, with no animations, that way he just kind of slides around the map, and all you get to see are his attack particles.