To show deep sympathy or empathy towards someone for their issues, more potently than soz or sozzles or an actual fuckingword can achieve. It is the exact opposite of a Roflcopter
u{buttinsky] - What I say to a dickless or dickhead who cuts in front of me in traffic or a line-up.
What's the matter ubuttinsky, can't you wait until I get mine?
I was in traffic and this fubuttinsky cut me off, almost missed hitting his buttinsky butt.