To be "torped" is when either you or your friends are storming on a night out or an event, when your batteries are at full charge. Derived from the marine weapon the torpedo which charges through water and inflicts maximum damage onto things it connects with. It can also be used to describe random, crazy or astonishing behavior by a person.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

when a friend of yours acts really lame for no reason, or avoids you by telling you a lie even though they have nothing better to do.

Getting torped can mean the same thing as getting owned or getting beaten badly. It can also mean you found something so easy you did it flawlessly.
Torped is a shortened version of the word torpedo that is kinda like bomb.