He also slipped several times in "Red Dawn". Listen for it whenever he says "fault" and "provoked". It's so cute. I once heard him in an interview describing having to do an American accent as participating in "linguistic gymnastics". He does well with a lot of different accents. I admire his acting as well as his good looks.
Simon Baker has difficulty with the word "our" because with his accent it's pronounced more like 'ahh' and is made using a broad mouth movement. Harder consonant sounds like 'arr' tend to be difficult for Australians. You can really hear the slip after episodes whe he say "stay tuned for scenes from our next episode"
If i was Lisbon after he said not our Lisbon I just would have leaned over and whispered in his ear I turned him down because I’m interested in a different guy In a vest and went back to talking to Rigby.