The spelling of the phrase "poking full holes" (/'poʊkɪŋ fʊl hoʊlz/) can be broken down phonetically. The word "poking" is pronounced with a long "o" sound and a hard "k" sound, followed by the "-ing" suffix pronounced as /ɪŋ/. "Full" is pronounced with a short "u" sound, and the "hole" is pronounced with an open "o" sound and the "l" is not silent. Overall, the phrase describes the action of poking or prodding at full holes in a given context.