A couple of phrases that will instantly ping me as American, so I'll put them in reverse.

American English -> Brit English
Go wash your hair -> Go and wash your hair
[We (ie the average Brit - there will always be exceptions because we have a lot of different dialects) don't 'go do' something, we 'go and do' something.]

Gotten -> Got or Become
She's gotten lazy -> She's become lazy or She's grown lazy or She's got lazy