The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple. Psa 19:7
The primitive root.
pey פ, ף = the mouth, thus open, blow, scatter, edge
tav ת = crossed sticks, thus mark, sign, signal, monument
hey ה = man with upraised arms, thus look, reveal, wonder, worship, breath
The primitive verbal root pey + tav is the Hebrew word for intercourse, as the woman’s “open mouth” receives the man’s “post”. The parable being told of foolishness, then, is to have an open mind (pey) which receives (tav) whatever comes before it as a revelation, or a wonder (hey); it is to be naive, gullible.