Etymology of goodnight

Goodnight, the most bastardised phrase of the Doc Johnson Canon
The term 'goodnight' has a special place amongst the inhabitants of that certain unholy hellscape (unlike your standard holy hellscapes, $2.99, *batteries not included*), scientists with multiple artisan pocket protectors performed an experiment to determine the relative variety of terms synonymous with goodnight. Results were both inconclusive and revealed multiple flaws in mathematical logic.

As of 24/02/2019 (dd/mm/yyyy) [incomplete]
Goodnight

Guten Nacht

nicht

GOODNG

goodnu

sheeshl

sleeb

sleesh

sssssssssssssssssssssgbbl

goodnih

gooj nigh

ggiog nigth

NOGJT

Gn!

giig nuf

gn

goodnugt

godnut

ginny

ginna

ggigngn

goob...

Godnod

gubgbubg

Goobbob

gnugget

goku

Hey! It's me! Goku!