I spend the night at my aunt and uncles house almost everynight all summer and every weekend. I usually sleep in the same room as my uncle and when he falls asleep I try to touch his dick with my foot and sometimes when we play games i tackle him and try to hump him. but anyway when he falls asleep i start masterbating hard and i really wanna suck his dick and fuck him. im thirteen. wats ur feedback?

It's a tricky one because if you did and he accepted it he, not you would be breaking the law.
It's best you keep it in your fantasy and avoid any sexual contact for his sake as well as yours