Shark check

when passers-by catch sight of a woman and a baby pram, their first reaction is to check the pram's contents to see for themselves how cute the baby is. Upon noticing that the baby is brown/mixed and the woman white (thus betraying their expectation that the baby/mother duo were alike), the observer's eyes are helplessly drawn towards the baby once more to readjust their perception that the white woman is a mudshark. This second look constitutes the shark check, confirming that the white woman has sharked it up.