My view on this.... Some people use this without even knowing it... i dont think using it how ross uses it would work in the uk but it is undeniable it can and does work if used a certain way. Using your language to promote a response is CRUCIAL

ie lets say ur asking a girl to come to your house here are how these 2 scenarios work

YOU: Wanna come do mine ??
HER: i dont know i should probly get home,
YOU: Why NOT
HER: coz i have work tomorow
COME ON IT WILL BE FUN
HER: No im gonna go

number 2

Wanna come to mine
I really shouldnt
Yeah... YOU PROBABLY SHOULDT (said as in we both know you shouldnt but you will)

Or You probly shoulnt actually.. to which she will reply .. WHY NOT

ive done it so much, its the same convo said differently.

Plus you can use comfort patterns to make a girl feel comfortable with you before just being yourself or whatever