A hit that is so huge it could end your day.
"Wow, that was a real day ender! I'm back now though and ready for another!"
by Masta22 December 18, 2009
Get the Day Ender mug.
It's a day where you make fun of your friends names sirin/ender in anyway you can!! Typical on January 30th
Person1: it's make fun of sirin/ender day

Person2: LETS GET EM!!
Sirin/ender: stop bullying me please
by Mila lol January 30, 2022
Get the Make fun of sirin/ender day mug.