Tighten your cape

Pay attention to your needy girlfriend.

The origin is from an E-40 song "Captain Save A Hoe"
The reference line is "You should have had your cape on tight that night."

Guy's girlfriend " Heyy what are u doin right now can I come through??"

Other guy "Tell your boyfriend to tighten his cape"

"My girlfriend is gonna leave me"
"Tighten your cape"