fertile octogenarian n. an unrealistic fiction that any person (male or female) is capable of having a child no matter at what age, infirmity or physical deficiency. Thus, if property title could not pass to one's child as long as he or she might have or acquire a sibling, then he/she must wait until mother and dad have actually died, unnecessarily tying up the property. Most states have passed laws to cure this anomaly.

The rule against perpetuities says you can't write a will that takes an an unreasonably long time to settle.

Do you specialise in inheritance cases, Stopdog?

"I bequeath my estate to the Battersea Dog's Home provided none of my relatives now living ever has a child."