My apologies, are you into astrology
Cause I'm, I'm tryin to make it to Uranus
from Jadakiss (Ft. Kanye West) – Gettin' It In Lyrics on Rap Genius
Meaning
Kanye doesn’t know what he’s getting into

This is a pun on “uranus” and “your anus.” Kanye is trying to make it to the girl’s anus, i.e. anal sex!
Note: Kanye most likely meant astronomy instead of astrology
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