Because Lel

'' An even better reason than S. YOUR RONG''

When someone does something, usually an action that annoys or harms others, for their own amusement. In fiction, if someone lives every day of their life with Because Lel as their #1 explanation for everything, they might be a Chaotic Neutral (or, in mildly worse cases, Lawful Evil) SOB who couldn't care less about how others feel about anything. This type of behavior could have this person double as a Vermin or Pest, depending on what kind of franchise they're in. More lighthearted instances of Because Lel involve a Comic Relief who playfully teases others but has their limits on how far they're willing to go for a quick laugh.