while having sex in the "doggy style" position, you then take one of your index fingers and stick in your partners anus and then hook the corner of their lip with the same finger.
My Girlfriend got mad when I gave her the rusty fish hook.
This can be used when someone asks you to do something, pass something, get them something etc which you don’t want to do for them. You can also throw in nigga at the end if you want.
Person 1: Yo holmes pick me up something to drink from da shop.