▁St ones ▁list ▁of ▁the ▁ 1 0 0 ▁Best ▁Songs ▁of ▁ 2 0 0 8 . ▁Time ▁critic ▁Josh ▁T yr ang iel ▁named ▁this ▁the ▁# 2 ▁song ▁of ▁ 2 0 0 8 . ▁ ▁Chart ▁performance ▁" So ▁What " ▁became ▁P ink ' s ▁most ▁successful ▁single ▁from ▁Fun house ▁( 2 0 0 8 ). ▁In ▁the ▁United ▁States , ▁the ▁song ▁entered ▁at ▁number ▁nine ▁on ▁the ▁Billboard ▁Hot ▁ 1 0 0 ▁in ▁the ▁issue ▁dated ▁September ▁ 6 , ▁ 2 0 0 8 , ▁ear ning ▁the ▁highest ▁debut ▁title ▁for ▁that ▁week . ▁Two ▁weeks ▁later , ▁the ▁song ▁to pped ▁the ▁US ▁Hot ▁Digital ▁Songs ▁chart , ▁s elling ▁ 1 9 7 , 0 0 0 ▁digital ▁download s . ▁One ▁week ▁later , ▁in ▁the ▁issue ▁September ▁ 2 7 , ▁ 2 0 0 8 , ▁it ▁to pped ▁the ▁Billboard ▁Hot ▁ 1 0 0 , ▁s elling ▁ 2 5 3 , 0 0 0 ▁download s ▁that ▁week . ▁The ▁song ▁became ▁her ▁second ▁number - one ▁hit ▁on ▁the ▁chart ▁after ▁her ▁ 2 0 0 1 ▁collaboration ▁single ▁" L ady ▁Mar mal ade " ▁with ▁Christ ina ▁Agu il era , ▁Lil ' ▁Kim , ▁and ▁M ý a . ▁The ▁song ▁also ▁to pped ▁the ▁US ▁Ad ult ▁Pop ▁Songs ▁in ▁the ▁issue ▁dated ▁December ▁ 2 0 , ▁ 2 0 0 8 ▁and ▁on ▁the ▁US ▁Pop ▁Songs