To sow gapeseed

from The Collaborative International Dictionary of English v.0.48

Gapeseed \Gape"seed`\ (g[=a]p"s[=e]d), n.
   1. Any strange sight. --Wright.
      [1913 Webster]

   2. A person who looks or stares gapingly.
      [Webster 1913 Suppl.]

   {To buy gapeseed}, or {To sow gapeseed}, to stare idly or in
      idle wonderment, instead of attending to business.
      [Webster 1913 Suppl.]