In contemporary English, "definitely" means "never". A face-saving maneuver in conversation...when somebody says definitely, it's an up-front lie.
"Hey, we should get coffee some time and hang out!"
"Uh...Yeah, definitely!"
A humongous ass. An ass that looks far too big for its body. So awkward.
"Wow, look at the Clabbers on that guy!"
"Yea, that's a shame..."