My Swimming Trunks Have Been Sucked Off Hot _verified_ [FAST]

Why does this happen? It usually comes down to two things:

: Do not turn the pump back on until the item is removed. Running the pump can suck the fabric deeper into the plumbing, potentially clogging the pipes or damaging the motor. my swimming trunks have been sucked off hot

Ocean waves pack thousands of pounds of pressure. If you are body surfing or getting "pummeled" in the impact zone, the sheer force of the moving water can easily overcome a simple drawstring. Why does this happen