Not sure whether that was a Murphyism or a Cosbyism.

Bill Cosby postulated the "Butt Switch Paradigm".

When you find yourself standing in a room in your house and you cannot
for the life of you remember why you went there in the first place, go
back where you came from and sit down.

According to Cosby, sitting down in the original location activates a
secret "Butt Switch" which forces a reload of why you went to that
other room.

Unfortunately, this doesn't work if you forget where you were just sitting.

B.