I'm not joking.
The Solid Snake Method is replying to someone by asking the end of their sentence. It sounds weird in Snake's awkward ass 2000s video game voice acting, but if you just apply it while talking normally to smeone, it will work. I've done it many times. It doesn't work if they ask you a question, but if they're just talking about themselves like people do 80% of the time it's pretty great.
Maybe your social skills aren't great, or maybe you're an introvert who stays at home a bunch and you just don't have an amusing anecdote to reply with. Either way… say someone is talking:
Them: So I had my daughter's bat mitzvah over the weekend, it was fun. It really felt like a wedding almost.
You: A wedding?
Or…..
Them: I love this burger it's so delicious. It's really the pickles that do it.
You: The pickles?
The other person will keep talking and will also be engaged seeing you were listening and showed interest instead of changing the subject.
You can't do it all the time, it's just a tool to be used. I promise this isn't a troll.