What is Beat-up?
1.
Anyone that looks like they have been beaten up, or the action of beating someone up
"He looks like a beat-up"
or
"I'm gonna open up a can of beat-up on his arse"
See
2.
A news story that has been written in such a way to make it appear more dramatic or sensational than it actually is.
Typically accompanied by an attention-grabbing headline.
That story of a man giving birth was a beat-up.
See