ぺ

cheek

single sheet (of paper)

half of a piece of paper

to tear off

seaside

to think something is delicious

building-to-land ratio

piece of paper

country bumpkin

returning tit for tat

to be in ruins

country bumpkin

ptoo (i.e. spitting sound)

failure

(unfolded) thin sheet of paper

stopper

very thin

shepherd's purse (Capsella bursa-pastoris)

first person to say something

fraud

monpe

closely (sticking, clinging, etc.)

(eating up) quickly

sound of thin metal or plastic surface caving in and springing back

once more

featureless (face)

flattening

sound of something making firm contact with a flat surface

flipping (e.g. a page)

slapping on (stamp, sticker)

very

abdominal pain

crushed flat

sound of a flat surface repeatedly making contact with something

slovenly

laughing embarrassedly and sticking out one's tongue

oppekepe

smooth and flat (e.g. of a prepubescent girl)

tonpei-yaki

calling sound of the lesser cuckoo

The Very Hungry Caterpillar (1969 children's picture book by Eric Carle)

very thin

spanking (a child)

spanking the bottom

backside

smooth

chattering

chatter

swishing and then spitting out (the toothpaste foam after brushing)

cheek