Whenever you find yourself in a bisexual mmf threesome you've already got a sex sandwich in the making, with either the chick in the middle taking on a cock from each side, or one of the bi studs playing the meat in the sandwich and taking a dick in the ass while munching some pussy. This trio has decided to take a picnic under the summer sun and put their sandwich making skills to the test, taking turns sucking and fucking in a bisexual tan...