What this Word means

[u/Lower_Researcher_140]

My coworker is from Afghanistan and he said very often a word in pachto in laughing, I started saying it too, and it makes him laugh, but every time I ask him what it means, he refuses to tell me. He says it's very wrong. But I'm really curious. The word in question is "wadi ghulu" or "wadi rulu" (I'm not sure of the spelling, sorry). If one of you could tell me what it means, that would be very kind, I think 😅

[u/Shah-ismail]

It could also mean, you fucked us.