Who knew Bill Gates had such a good sense of humor? The Microsoft co-founder and billionaire philanthropist recently participated in an “ask me anything” session on Reddit.

One of the redditors took it as an opportunity to prod him about his "next-generation condom" project. Here's what he replied:
alex4346: Any luck with the condom design competition?

Bill Gates: This is a sensitive topic. The idea was that men don’t like the current design so perhaps something they would be more open to would allow for less HIV transmission. We still haven’t gotten the results. One grantee is using carbon nanotubes to reduce the thickness.
Okay, so maybe Gates kind of walked in on that joke when he wrote “This is a sensitive topic.” It didn't take long for his joke set the Reddit crowd all off. You can check out the AMA post here