The player who fidgets with his chips constantly and then goes completely still when a big bet lands is holding a strong hand. The stillness is the tell - not the fidgeting.

Why they do it

Chip fondlers at $1/$2 are usually nervous energy players. The fidgeting is their baseline. When they stop - when they go quiet and still after a big bet - it means they're suddenly very focused because they have a real decision with a real hand. That stillness is not uncertainty. It's anticipation.

The adjustment

When this player goes still after your bet, slow down. Don't fire another barrel. They're not folding.

What it's worth

One correct check on the turn or river against a player who went still saves you $60-100 and keeps you out of a spot you were never winning.