3005

Childish Gambino states in his song that he'll be by the girls side, who he is singing about, until 3005. With 3005 he means infinity. Since 3+0+0+5=8 and an 8 sideways is the same as a ∞. He will be right by her side until infinity.

"No matter what you say or what you do
When I'm alone, I'd rather be with you
Fuck these other niggas
I'll be right by your side till 3005"