I'd shave for him
Similar to "I'd tap that". Meaning if the subject wanted to have sex or give oral, you would shave your vaginal area in order for it to happen.
A: "see the guy over there?"
B: "the one in the red shirt?"
A: "yeah.. I'd shave for him"
B: "the one in the red shirt?"
A: "yeah.. I'd shave for him"