Is it wasabi in here? - (with full mouth) I like it!

这里有芥末吗？- （满嘴）我喜欢！

I went to open it with my mouth full of toast.

我满嘴吐司去打开它。

This is great, I said with my mouth full.

这太棒了，我满嘴说。

Sorry. You caught me with my mouth full. I didn't expect you to see me right when I walked in the door, and I didn't mean to be rude.

抱歉。我吃东西时被你抓个正着。我没想到我一进门你就看见我了，我不是有意冒犯你的。