↓ Transcript
1. (Hey, Gary, isn't it? haven't see you since we were kids!) [yeah!]
2. (how's things?) [I'm just enjoying being male]
3. (what do you mean?) [I mean this sex change really suits me]
4. (but you were born male -- you've had no sex change)
5.
6. [I've had an even number of sex changes]
2. (how's things?) [I'm just enjoying being male]
3. (what do you mean?) [I mean this sex change really suits me]
4. (but you were born male -- you've had no sex change)
5.
6. [I've had an even number of sex changes]


(2 votes, average: 4.50 out of 5)
This only works under the ridiculous assumption that there are only two sexes!
good point, but perhaps it’s just the ridiculous limitation that there are only two (mutually inverse) sex-change operations?
It would work for N sexes, so long as the available sex-change operations form a cyclic group of order M…
“I’ve had 0 mod M sex changes”