Here’s a conversation I have many times a day:
Other: Where are you going?
Me: Today I am walking from A to B. Walking. On foot.
Other: Are you hitchhiking?
Me: No, I am walking. On foot.
Other: Are you riding a bicycle?
Me: No, I am walking. On foot.
Other: (after a pause) Are you taking a car?
Me: No, I am walking. On foot.
Other: [Silence, accompanied by a look that says, “You’re crazy.”]