How to Break into a Tight Crowd
Technique (Eavesdrop In):

No Whatzit? No host for Whoozat? No problem! Just sidle up behind the swarm of folks you want to infiltrate and open your ears. Wait for any flimsy excuse and jump in with “Excuse me, I couldn’t help but overhear…”
Will they be taken aback? Momentarily.
Will they get over it? Momentarily.
Will you be in the conversation? Absolutely!