I had a dream

The whole of the dream doesn't matter, one line is all that matters. However, the one line doesn't make sense without a set up.

So, some aliens land right? And they look human, right? And in my dream I was part of a group that was going to work with them to help integrate them or something, right?

Okay, so we're having this ceremony where we go over and meet the aliens for the first time and the aliens have corporate welcome packs. You’ve seen lately how they sell rolled up t-shirts tucked and rubber banded inside of ball caps? They're handing those out to us as a welcome to their side. Annnd they're pink. That doesn't matter, but I wonder where my brain is taking this. Anyway, that is the set up for the line. Now, here is the line.

I take my cap and shirt and look down at it and say "Thanks. I feel sort of bad now, all we brought to give you was syphilis." To which the alien girl cocks her head and says "What's that?" And I say "You'll find out."

That has to end up in a story somewhere. I mean, it can’t NOT end up in a story.