Picnicking

from The Collaborative International Dictionary of English v.0.48

Picnic \Pic"nic\, v. i. [imp. & p. p. {Picnicked}; p. pr. & vb.
   n. {Picnicking}.]
   To go on a picnic, or pleasure excursion; to eat in public
   fashion.
   [1913 Webster]