The statement ' kiddie porn squicks me' and 'kiddie porn disgusts me' may both be true.
Stating that something 'squicks you' is merely an observation of your reaction to it, but does not imply a judgement that such a thing is universally wrong. Stating that something is 'disgusting' implies a judgement that it is bad or wrong. The concept of the 'squick' differs from the concept of 'disgust' in that 'squick' refers purely to the physical sensation of repulsion, and does not imply a moral component.
A situation or concept which engenders this reaction. The physical sense of repulsion upon encountering a concept or situation one finds disgusting.
