When attempting to fuck a fat girl on her back, you've "popped the hood" when you lift up her gut in order give your dick access to her vagina.
'She really wants you, dude'
'Ugh, she could play offensive line for the Browns. But I need to fuck something tonight."
"Dude, pop the hood."
A bob is slang for a British shilling. Two-bob means two shillings. There are twelve shillings in a pound. "Two bob" typically precedes an insult where you are essentially saying the person is worthless.
"Get back inside, you've got nothing on, now mind your bleedin' own you two bob cunt!"
