1. The ability to aim at an object and hit everything but the object.
2. The ability to hit targets while under no pressure but being unable to hit anything after being put under the smallest amount of pressure

The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.