You Over-Explain Everything
If you feel compelled to justify every decision, provide backstory nobody asked for, or explain jokes after telling them, you're signaling social anxiety. The need to fill silence and preempt judgment is one of the most common and visible awkwardness tells.
You Don't Know When to Leave
Staying too long at a party, lingering after a conversation has naturally ended, or not picking up on 'well, I should get going' signals — these are signs that you're not reading social cues accurately.
People Give You Polite Smiles
The polite smile — tight-lipped, no eye crinkle — is the universal signal for 'this is uncomfortable but I'm being nice.' If you see this expression frequently in social interactions, it's worth considering whether your social calibration needs adjustment.