The Flatmates episode 34, from BBC Learning English

Michal and Tim can't fix the flood in the kitchen but help comes from Helen in episode 34 - Helen to the rescue

[zhaosida]

Episode 34: Helen to the rescue
Michal: I told you so!
Tim: Hurry up, I'm getting soaked!
Helen:
What's going on here? What a mess! Dad'll kill me.

Michal:
It's the water. Tim didn't turn off it before trying to fix the tap.

Helen:
Honestly Tim! You're as thick as two short planks sometimes. Michal, turn the water off. Tim, give me the spanner. I'll soon have this sorted.

Tim:
What shall I do?

Helen:
Get the mop, of course! I want this floor as dry as a bone now! Dad's coming round later to check the flat.

Tim:
Is he?

Tim and Michal:
Oh no!

Helen:
No, I'm just winding you up!Episode 34: Helen to the rescue
Michal: I told you so!
Tim: Hurry up, I'm getting soaked!
Helen:
What's going on here? What a mess! Dad'll kill me.

Michal:
It's the water. Tim didn't turn off it before trying to fix the tap.

Helen:
Honestly Tim! You're as thick as two short planks sometimes. Michal, turn the water off. Tim, give me the spanner. I'll soon have this sorted.

Tim:
What shall I do?

Helen:
Get the mop, of course! I want this floor as dry as a bone now! Dad's coming round later to check the flat.

Tim:
Is he?

Tim and Michal:
Oh no!

Helen:
No, I'm just winding you up!

[GuimarasManga]

#1. It should be Tim didn't turn it off i think.

[Pyro]

1. Tim didn't turn off it turn it off

because "it/them/me/him" those words only can put in the middle of frase.

[julialucik]

Helen's voice sounds just like Emma

[花房伸祐]

It’s really hard to tell. But I think “Tim didn’t turn off it” is incorrect. To be honest, I don’t care for it while listening to the skit.

[ChinGina]

Can someone tell me what's the meaning of "you're as thick as two short planks", it' means someone is too stupid?