Context is Detective Comics (1937) #66, page 4
Transcript:
Harvey Kent: Yes, I suppose I look queer… but I’m not ashamed any more! Now I flaunt my two sides… like a flag… the flag of…Two-Face!
I don’t think he’s bisexual. Presumably he flips a coin before every sexual encounter to determine whether he will be gay or straight, but he’s never attracted to both sexes at once.
Well, there was that one time when the coin landed on it’s edge & stayed there…
Gives a new definition to edging
flip Are we giving head or getting tail?
“Batman I’m going to flip this coin. If it’s heads I will drop you into this vat of boiling acid. If it’s tails I am going make sweet love to you”
Go on…
If he has a preference, I don’t think we’d ever know it. He sees a couple butts and flips his coin to see which he should go after. Then he flips it again to see if he’s top or bottom…
Man… I wish I had two faces so I could look my lover in the eye as he pounds me from behind.