That one was tricky right?
the Joke:
Never date a tennis player.
Love means nothing to them.
Explanation:
In tennis, “love” is the official word used to mean zero in the score (for example, 15–love).
The word comes from the idea of having nothing on the scoreboard.
The joke uses this double meaning:
In relationships, love is something very important.
In tennis, love literally means nothing (zero).
So when the joke says “Never date a tennis player. Love means nothing to them,”
it’s funny because tennis players are used to calling “love” zero, not something emotional.
That contrast between romantic love and tennis scoring is the whole joke