Four Fingers are Better than Five

Megan:  You know how cartoon characters only have 4 fingers?

Me:  Huh?

Megan:  Cartoon characters. They always have just 4 fingers.

Me:  I guess I never noticed that.

Megan:  Know why that's good?

Me:  Why?

Megan:  No middle finger.

Me:  No middle finger?

Megan:  You know ... the BAD one?

Me:  Oh ... right.

I hate that she knows there's a "bad" finger.