In Fight Club (1999), Narrator hugs a very fat man:
Narrator: He developed bitch tits 'cause his testosterone was too high and his body upped the estrogen. That was where I fit. Between those huge, sweating tits that hung enormous, the way you'd think of God's as big.
What does "where I fit" mean? Does it mean Narrator is also a fat man (or) Narrator fits his body between those tits?