Is this flirty joke offensive or just dorky? [Said to a black lady]

Well, I think the unspoken rule at my job is if you don’t initiate, you’re not going to get flirted with. At least that’s MY rule and I’m pretty sure everyone else lives by that rule too but I can’t say for certain.

It’s also worth noting I work in manufacturing, I’d venture a guess that the culture here is way different than say a cubicle farm.