Inspired by the HTTP Status Dogs from @mikelee :)
100
Continue
=> source
200
Ok
201
Created
202
Accepted
204
No content
207
Multi-status
226
IM used
300
Multiple choices
302
Found
307
Temporary redirect
401
Unauthorized
404
Not found
405
Method not allowed
408
Request timeout
409
Conflict
418
I am teapot
429
Too many requests
500
Internal server error
503
Service unavailable
504
Gateway timeout