P/D

pepper.paper.pauper.peeper.pooper.piper.

pep.pap.pop.peep.poop.pip.pup.

and the p's start appearing as inverted d's.

dapper.dipper.dropper.

paddle.puddle.piddle.peddle.

and humpty dumpty broke his crown.

pd = punjabi dhaba

dp = durga puja

pid = process identifier

dpi = dots per inch

pde = partial differential equations

edp = employee data processing

dap = download accelerator plus

adp = adenosine diphosphate

dup = duplicate

opd = out-patient dept

pp = pages

dd = demand draft, doordarshan

pie pie wasool loonga.

dye dye abhi nahi.

pee pee chiii chiii.

peedhee dar peedhee. pusht dar pusht.

p.a. = persona assistant father pascal per annum public address?

d.a. = district attorney dearness allowance?

if pwd = public works dept, then phd = potential horrors dept?

potter potter harry potter.

penfriend = post se banao dost?

paah! duh!