no picnic
Not an easy task; unenjoyable or challenging. I love kids, but watching 20 of them at once is no picnic, believe me! Spending a beautiful Saturday afternoon cleaning out the garage is no picnic.
no picnic
Difficult, no fun, as in Recovering from abdominal surgery is no picnic. This expression, alluding to a picnic as a pleasant occasion, was first recorded in 1888.
no picnic
No easy task; not an enjoyable experience. This term began to be used frequently in the late nineteenth century. Rudyard Kipling used it several times, as in Wee WillieWinkie (1888): “T’ain’t no bloomin’ picnic in those parts, I can tell you.”