Speechless

Our family was headed to go bowling with our extended family. On the way we were explaining what bowling was to seth (4).
Dad: you pick out bowling balls and you roll them down an isle and try to knock over pins.
Seth: Oh wow FUN!! Are they big?
Dad: Yes their big, some are smaller then other and some are heavy and some are light.
Then for a long while their was silence. THen we hear
Seth (4): Daddy, are my balls heavy? (of course he was referring to the bowling balls he would pick.)
IN the mean time it took 10 min to answer cause Jeff and I completely lost it in the front seats.