How does the holder of the Lasso of Truth hold up when asked to lie on demand? Rather convincingly it turns out.

'Wonder Woman' star Gal Gadot made her first visit to 'The Tonight Show with Jimmy Fallon' last night and marked the event by playing what appears to be one of the host's favourite games.

Taking turns trying to stump each other about what items are hidden inside their mystery boxes, Gadot proved to be quite the competitor in 'Box of Lies'.

Between all her time in the Israeli military and work as an actor, her BS meter is very finely tuned. And you can tell Fallon is properly raging.

We like her even more now.