DPB

DPB /d*-pib'/ vt.  [from the PDP-10 instruction set] To
   plop something down in the middle.  Usage: silly.  "DPB yourself
   into that couch there."  The connotation would be that the couch
   is full except for one slot just big enough for one last person to
   sit in.  DPB means `DePosit Byte', and was the name of a PDP-10
   instruction that inserts some bits into the middle of some other
   bits.  Hackish usage has been kept alive by the Common LISP
   function of the same name.