Getting rewarded with her owners huge cock. The pain lets her know she's done a good job.
imgur.com category @subwifemod
"What about my lil' brother?" (the pain of being cock-blocked; from Oresama no Toriko by Amagi Reno)
imgur.com category @IamKingTarquin
Pain and regret take hold after initial brief moment of joy thanks to BBC
gfycat.com category @BAMBALERENO
imgur.com category @[deleted]
imgur.com category @SandmanEpic
gfycat.com category @TruthOfCivilisation
gfycat.com category @Opisthosyllis