be no picnic

US /bi noʊ ˈpɪk.nɪk/
UK /bi noʊ ˈpɪk.nɪk/
"be no picnic" picture
1.

to be a difficult or unpleasant situation or task

:
Raising three children on a single income is no picnic.
Working in that environment can be no picnic, but someone has to do it.