did the rounds

To flirt with lots of people

He certainly did the rounds last night!

Did a Faisal

Confusing the negatives and positives in algebraic calculations.

Salhi: x^2-6x+5 factors to (x-5)(x+1).
Hriman: Oh no, you did a Faisal.
Salhi: Oh you're right its (x-5)(x-1).

did a cooky

Backing out of something you've previously committed to

Russ was booked to go to a fat club class but decided he didn't want to go and did a cooky

did a Nathan

Where you accept a job, work for a tiny amount of time winning shit loads of business, then jump ship to a bigger better company when they come sniffing

Oh yeah did you hear about Aaron? Accepted that job then "did a Nathan" and went to that other place.

skully did it

When someone does something, but no one knows who so they blame the fictional character "skully" for the action.

"Who made this room dirty?" "Skully did it"

healthy dids

a female with very nice breasts.

aye shes stunning. healthy dids as well.

Did a RCB

To royally fuck up a good situation

I was doing well in school but as soon as I joined the college i did a RCB.