It means... I've been stuck here for the past year. I've had a birthday here, I've made friends here, I've seen a lotta people come and go. People from our world, too...

[He sighs warily. He hates explaining this, but he's not going to shove a pamphlet at her and expect her to be alright.]

L-look I can't explain it, okay? You know I ain't smart. Just... take my word on this. Please. We're pulled here by somethin' we've got no control over and some people stay for a long time and some people don't.