@GeePawHill that's exactly what #StevenHawking already said:

There can be only two kinds of #Aliens:

1. Those that will plunder and pilfer our planet harder than the Combine from #HalfLife2.

2. Those that came to us "for the lulz" and that will GTFO at the slightest sign of our aggression.

Let's hope it'll only be the latter kind...