punding

Etymology
A gerundial noun from the slang term to pund used by addicts, coined by Swedish forensic psychiatrist G. Rylander, in 1968.

Noun

 * 1) A human activity characterized by compulsive fascination with and performance of repetitive, mechanical tasks, such as assembling and disassembling, collecting, or sorting household objects.
 * Punding may consist of activities such as collecting pebbles and lining them up as perfectly as possible, or disassembling doorknobs and putting them back together again.