Lovely threesome with wife and mistress

Charles Dera is a teacher with a thing for one of his sexy students, Natalia Nix. They are just getting flirty after class when Charles' wife, Natasha Nice, barges in while furiously waving around a pair of panties that AREN'T hers. She KNOWS Charles has a mistress... and it doesn't take long for her to realize it's Natalia.