JUDGES 14 - 14 "And he said unto them, Out of the eater came forth meat, and out of the strong came forth sweetness. And they could not in three days expound the riddle" Further on in verse 18, plowing with my heifer.
Samson it seems was showing the fruits of work, in sowing and reaping. Plowing, planting seeds, for tomorrow's reaping and reward. Samson by meat and sweetness, the bounty of seeds planted. A substance of meat and fruits a reward and joy from sweetness of a good harvest.
A heifer like planting seeds, brings the hope of growth and a calf offspring. Giving reward to the sowing keeper of the heifer. Samson was expounding again, the rewards of faith and the fruits of growth in the future rewards.