My then 2 1/2-year-old son was just learning to talk and fascinated - typically - by heavy machinery.
We were getting our driveway repaired and the Repair Guy came in a big truck. Repair Guy got out, and he was a big man. My son, who had been playing in the back yard, comes tearing into the front yard and points in the direction of the man and shouts:
"Dumbfuck, Daddy, Dumbfuck!!!"
Repair Guy stops. Looks at me. Is debating whether I need to be pummeled or something. I quietly turn to my son and say:
"Why yes, son, that it is a dump truck."
Repair Guy just about died laughing.