This weekend I have a family 'picnic' [=a picnic with family members] to go to.
Breaking a leg is no 'picnic'. [=breaking a leg is not a pleasant experience]
Being president isn't exactly a 'picnic'. [=being president is not easy]
(..) I haven't even mentioned all the free yak's milk. What... what did you say? Yak's milk. Milking a yak ain't exactly a picnic. You know, once you pick the hairs out it's very nutritious. No, no. Something about a village. (..)2001 Monsters, Inc.