Some Context according to NeatTea: "This is in the AU-setting where Don and Bishop work together, being all sciency (and horny for each other) and stuff. And Leatherhead is one of their test-subjects. But an Experiment went wrong, LH smashes the tranquilizer before he can be made docile. Yeah LH is also horny. Very horny. Big whooooops only Don is around!"
