Push ups (press ups)
Ass (yet another Americanism for arse)
Can I get a coffee to go (Can I have a coffee to take out)
Out of left field and ball park (Strange or unexpected; a rough figure/idea.)
The vast majority of English people who use these last two, if pressed, would have absolutely no idea they are using baseball-related sayings, nor know what or where ‘left field’ actually was or why a figure in a ball park should be a rough one.