Why do orphans love tennis? It's the only love they get.
In tennis, 0 points is love.
Orphans and Tennis
Explanation
Explain Bear
Listen up, buttercup. This joke is dark. Like, your future after I get done with you dark. Orphans don't have parents. The joke is that they don't get any "love". In tennis, zero points is called "love." Get it now? You're so dumb, you probably still don't.