Both dramatic and drastic. This phrase is to be used when neither alone accurately convey the extent of a change.
My situational awareness dropped dramastically after sniffing a bottle of chloroform. {As did my limp body.}
A revolutionary hairstyle pioneered by the great John Scogin featuring a chili bowl fused with a mullet.
See also chili bowl mullet man.
Beach Boy in the front, George Harrison in the back... Must be one of those chullets.