The rapper, Nicki Minaj grabs fan's boobs on stage

Nicki Minaj grabbed a fan's breast during her concert in Frankfurt, Germany over the weekend.

But that didn't happen until the fan was given the chance to queeze the rapper's most famous asset – her big butt  while on stage.

Reports say the lucky female fan was invited to join Nicki onstage during her performance and didn't waste any time grabbing the rapper's behind.

After the show, Nicki tweeted, “She wanted to get it poppin so I got it poppin right back. I'm not kidding. Tittieez on fleek (sic)”.

Nicki, who coined the term 'pretty on fleek' thanks to a recent collaboration with Beyoncé called Feeling Myself, has been a driving force in changing the world's perception of beauty and helped bring much more curvaceous women to the spotlight.

Do you think it was right for a fan to grab her butt and her squeeze the fan's boobs on stage?