Cool trick.

[Login]

Take the last two digits of the year you were born in. Now, add the age you will be this year. For everybody, this will equal 111 or 11.

1996 -> 96. I'm going to be 15 this year, September 21st. -> 15 + 96 = 111.

[Fat_Sacks]

:o
Haaaaaaaaaaaaaaaax...

[Qwertygiy]

Not always.

My sister was born in 2001. 01 + 10 = 11.

[Jacob__mybb_import1]

The first digit depends on the century you were born in (or more accurately, the distance of the century you were born in from the current century.). My great-grandfather was born in 1884, 84+127 = 211. Jesus was born sometime around the year 4, 04 + 2007 = 2011.

It always ends in 11 though.

[Fish]

Take the last two digits of the year you were born in. Now, add the age you will be this year. For everybody, this will equal 111.

1996 -> 96. I'm going to be 15 this year, September 21st. -> 15 + 96 = 111.

2000 > 00. I'm 11 already, so.. 0 + 11 = 11?! Weird..