The Twelve Days of Hackmas

On the twelfth day of Hackmas,
my shrewd love sent to me:

Twelve summers summing,
Eleven typers typing,
Ten boards a-beeping,
Nine trainees lancing,
Eight aides a-bilking,
Seven pawns a-skimming,
Six fleeced a-paying,

Five stolen pings!

Four calling nerds,
Three henchmens,
Two purple gloves,
and a cartridge with a spare key.

For more about the subtitle (“Alice is sending her message to Bob...”), see Alice and Bob and “Alice and Bob”.