[Hey, don't shoot the messenger! Or joke spoiler? Either or.]

I can't speak for the other two, but I'm certainly not endorsing sex on the first date (though no judgement at all if it happens). I'm only explaining the joke.

[There's a long pause and a few stray dots of ink before Ginia writes a bit more.]

When done properly, it can be quite pleasurable, but oral sex is a thing of preferences. Some enjoy receiving, others don't, some enjoy giving, others don't.