I guess she couldn't 'give yout he clap'...
get it? people with one hand can't clap? get it? omg I'm retarded.

People with one hand CAN clap. Only, they have to be extremely fast. Their hand has to be moved 'palmwise' faster than their body can registrate. This way they create some sort of time warp which is a split second behind real time. During this time warp they have to flip their hand and move it 'counter-palmwise' and then thei hit their own hand which is still moving palmwise in the other time zone. Of course, moving it counter palmwise must be done somewhat slower than palmwise otherwise the two directions will be happening in the same time zone.

I've tried it several times and when I concentrate on it, I can do it whenever I want!