A state of intoxication in which a person may (hopefully) be after consuming a number of drugs including but not limited to Ice, MDMA, Dexies, Pingers, and most commonly Speed. All of these drugs are types of Amphetamines, hence the name. Similar to saying that a marijuana-smoker is "stoned", or that an alcohol consumer is "drunk".
Uni Student #1: You seem unusually happy today, are you drunk?
Uni Student #2: Nah, I'm just Amphing off my head!
Kate: Can we get Amphing tonight?
Me: Hell fucking yes we can!
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.