The initial idioms of the letter P

pud	pudding
pudding ring	puddinghead
puddle	puff along
puff at	puff out
puff piece	puff up
puffer	puff
pug-ugly	puggled
puke (one's) guts out	puke hole
puke up	puke
pukey	pukish
pukoid	pull
pull (one's) chestnuts out of the fire	pull (one's) finger out
pull (some/a few) wires	pull (someone) down a notch (or two)
pull (someone) down a peg (or two)	pull (someone or something) out of a hat
pull (someone's) bacon out of the fire	pull a boner