There's a thin line between what's Kansai and what's Osaka-ben but both sounds really stupid.
Osaka benCalling someone stupid: "ahoyanen"
Telling someone you like someone/thing: "suki-yanen"
Saying what's up/what: "nan-yanen" etc. You add -yanen and purposely sound gay and that's pretty much Osakaben for you.
Really = "homma?"
"sou yan~" "yaayan~" ^%$#^Sorry for any Osaka fans here, but I think it sucks.
This is a popular old school anime but the voice actress was asked to dub it in Osaka ben. I thought it was hilarious.
http://www.youtube.com/watch?v=7k9Nbrm6NKg