selling herself as a sex pot to push copies of her new album rebel heart .
after belting out human nature to drake at coachella on sunday night , madonna pulled the 28-year-old singer back to plant a kiss on his lips , making out with him for at least three seconds .
what the 56-year-old mother-of-four did n't see was that when she was finished , the musician looked horrified , even wiping his mouth .