dip the red sword
To ask a man if he dips the red sword, is to ask him if he's comfortable having sex with a girl on her period.
*A young couple in bed together*
Sarah: 'So Aaron, do you... dip the red sword?'
Aaron: 'Absolutely. A little blood never hurt nobody'
Sarah: 'So Aaron, do you... dip the red sword?'
Aaron: 'Absolutely. A little blood never hurt nobody'