Maybe it’s just us (or maybe it's that Tuesday feeling) but we are genuinely finding this hypnotising.

First shared on Reddit six months ago, a black-and-white gif of an old cartoon has reappeared on Twitter of late.

It speeds up when you look away (not completely away – keep it in your peripheral vision) and shows down again when you look at it.

 

Freaky and fascinating - we could watch this all day.