Buyur burdan yak.Gordün mu yaptıgını ...

I am not a native speaker, I looked this up at: 

http://www.tureng.com/search/yak

Scroll down to the very bottom, apparently idiomatically  "Buyur burdan Yak"=  "another country heard from" or "how about that".

"Gordün mu yaptıgını ..."  Did you we what you have been doing"

Maybe others can help with the whole sentence.

My try:

How about that.  Did you see what you did?...

 Look you open/ switch...from here. Did you see how its done ?

yak comes from:  yakmak 
/ı/ 
1. to light; to ignite; to set fire to, set (something) on fire. 
2. to scorch, sear, burn. 
3. to burn (something) up, burn (something) down, burn. 
4. (for chemicals, sun, wind, etc.) to burn; (for wool) to irritate (one´s) skin. 
5. to turn on, light (electric lights). 
6. to burn, use (something) as fuel. 
7. to ruin (someone), cook (someone´s) goose. 
8. to inflame (someone) with love. 
9. to shoot (someone) (with a gun). yakıp yıkmak /ı/ to destroy utterly.


yakmak 
/ı, a/ 
1. to apply (a plaster, blister, or cautery) to. 
2. to apply (henna) to. 
3. to compose (a folk song).

Reyhan, buyur buradan yak is speaking language and the before giving answers were correct, it means: How about that

 Anyway..we learnt about the expresion and also about the verb yakmak ( and at the moment i edited my post i didnt see LİR´s post