It sounds like Guardian Pol Ed Patrick Wintour enjoyed flying with the PM back from Asia. The Speccie have the inside story from 35,000 feet:

“Wintour – who appeared to be enjoying the champagne on offer – decided the time had come for him to be a trolley dolly and assisted an air hostess by taking the other end of the trolley.

To the surprise of ministers on the plane, he made his way down the aisle putting ice and lemon in the cups, and getting drinks out of the drawers on his side of the trolley, repeatedly shouting ‘this is so easy’.”

Must have been the jet lag…