A fat man's bollocks.
She had such a massive gunt that she could only pull a man with a gock and galls.
A middleground of saying someone 'has balls' and 'has the gall' to do something.
Noun: galls; used when one is reputed for doing risky things
Adjective: gallsy; used when one is doing something risky
"Man, he has galls to have done all that"
"She's gallsy to be doing that"