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If you start with the sound
oof
you can add a P on the front of the O and get
poof
you can then increase the length of the word by adding an S to the front of oof and get
spoof
you can then convert this to an abbreviation and a sound by adding another P and then bisecting the word with a space to get
psp oof
This can be repeated ad infinitum
oof
you can add a P on the front of the O and get
poof
you can then increase the length of the word by adding an S to the front of oof and get
spoof
you can then convert this to an abbreviation and a sound by adding another P and then bisecting the word with a space to get
psp oof
This can be repeated ad infinitum