Thats supposed to be the "Correct" and "safe" way to do it. If you got head with a condom on then you got head but you prolly didnt feel it and if you a girl gives head with a dude wearing a condom then she gave head but it tasted terribile and the guy didnt feel a damn thing.
Just because you put a glove on to give a cow an enema, doesnt mean you aren't sticking your hand in its ass.
man i was watching a porno and this chick put a condom on the dude's dick before slobbin on it i was all, "wtf?"