KILL NERVOUS LAUGHTER. It is a sign of someone who cannot handle tension. It is an anxious response to slightly uncomfortable situations. Nervous laughter is a way your brain fills the non-audible tension that silence creates. It is a tactic your brain uses as a way to signal that you are not looking for conflict.
Instead, be prepared to sit in those few seconds of silence. Sure, laugh if something genuinely humorous occurs. But by no means should you quash the tension for no reason.
Especially with women, it is a very subtle queue that you are not conflict averse. That you are comfortable in most situations. It represents a slight stoicism, that it takes more than something a little awkward to throw you off.
Be comfortable with silence.
The tension in silence.