Correct

报屁股

/ bào pìgu / 
Strokes

Example

As a Noun

inconspicuous space/corner in a newspaper

1
Tā
他
de
的
wénzhāng
文章
fābiǎo
发表
zài
在
bào
报
pìgu
屁股
shàng
上
  
。

His article was published in an inconspicuous spot in a newspaper.