Madonna hasn't been grocery shopping for a year.

The 56-year-old singer, who has a busy globe-trotting career, has admitted she hasn't been into a food store and stocked up her cupboards with hearty products and tasty treats for 12 months.

Speaking in a Q&A with UsMagazine, she said: ''The last time I went grocery shopping was a year ago.''

However, that may have something to do with the fact the 'Living for Love' hitmaker can't stand being in a busy place.

She explained: ''I have major claustrophobia. I don't like being stuck in small, enclosed spaces or in crowds. They freak me out.''

The blonde beauty also opened up about she'd most like to meet US President Barack Obama and how she thinks the only way she'd be able to bag herself an invite is by marrying Jay Z.

She explained: ''The person I most want to meet is President Obama. When the heck am I going to meet him? He just needs to invite me to the White House already. He probably thinks I'm too shocking to be there. I'm serious. If I was a little bit more demure...or if I was just married to Jay Z. Hey, if Jay would only take me as his second wife, then I'd score an invitation.''