When you haven't heard from someone for an extended period of time, and thus start spamming them with messages that are just masses of random letters in an attempt to get their attention.

An indescribable feeling of loneliness paired with constantly questioning your self worth and happiness

Minecrafter Withdrawal, also known as Minecraft Withdrawal or Minecraft Withdrawal Syndrome (MWS*), is a mental condition that occurs when a Minecraft player (see Minecrafter) either willingly or nonwillingly such as not being able to play it does not play Minecraft for a long period of time. This may be days, months or even years. Symptoms include excessive boredom, increased desire to play Minecraft, (more so in the unwilling cases) and potential sadness and/or aggression.
*MWS is not to be confused with Cosbino's definition of the same word, which is here: Minecraft Withdrawal Syndrome.

When someone's personal vehicle is taken away due to an accident or some other means and they are unable to drive it.

When someone loses their personal vehicle and is unable to drive it.

To experience random, non-provoked boners as a result of not masturbating for a long time.