To search through said container and only take what one wants taking the good stuff and leaving the leftovers for others.

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.

To intentionally interfere with another's process, practice, method, or effort to accomplish some specific goal. The use of this is tied to Stanford University and its Comp Sci department as part of their interaction with Military and Intel people. In Stanford Lingo to RF someone is to stomp them into the dirt - make their effort worthless and to intentionally discredit them in the public. Stanford members are famous as well for RF'ing any number of people.

To be very, very, very drunk. Intoxicated to the point of no return. When a said person is "rat fucked", common aftermath includes sever headache, embarrassing flashbacks and an inability to remember anything from the period that the said individual was "rat fucked".

To get fucked hard out of something.
Hit, shot, slapped, beat.

To be searched aggressively and thoroughly.

The aftermath of someone from Kentucky dropping test equipment off of a tall building.