kiloday 

An alternative form of birth celebration, in contrast to the traditional birthday. Each kiloday is 1000 days apart, starting at birth.

They say I'm 27, but I'm just 10 kilodays. Feeling young!

kiloday by ZuderDuder October 8, 2013

Killday 

Noun; A person who is a complete buzzkill, has no trust in anyone, and goes out of his or her way to ruin an event in which he or she is unhappy with.

Wow she ruined our party because she was going to be out of town. What a Killday!

Killday by BushLover10 July 21, 2011

kilday 

This is a rude person Kildare often gets headaches but is nice sometimes she is always complaining

Kilday was being so rude today because of her headache

kilday by Ladylaide November 3, 2021