These two butt slaps were posted here a few months ago. Here they are in higher quality and in separate gifs.
Spanking
Jizz to these sluts: young and old, white and black, amateur and pro pornstars
http://i.imgur.com/YgDkQMW.gif
original: http://i.imgur.com/YgDkQMW.gif
AsiansGoneWild, BDSMGW
PornGifsbyBot
randomsexiness
PornGifsbyBot
Pantyfetish, bustybabes, tits, boobs, b00b3d, ThinWaistBigTits
MouthWideOpen
BDSMGW
MiddleEasternHotties
MakeupAddiction
booty
OnOff, onoff2
RealGirls