Madonna tested out some new material at the Comedy Cellar in New York City this week, surprising the crowd with a stand-up set while in attendance with friend Amy Schumer. One blurry photo from the evening shows the superstar standing up on the famed venue's tiny stage while reading jokes from a notebook on a stool placed in front of her,

Patrons at a New York comedy club were stunned to realise the act on stage in front of them was none other than pop legend Madonna. Comedian Amy Schumer accompanied Madonna along to the club. However,