There are many for different scenarios but I guess some that I use would be : "Spill the beans", "spit it out", "excuse my french", it's on the tip of my tongue" etc. Here's a useful link:http://www.smart-words.org/quotes-sayings/idioms-meaning.html

One for the road. She has a nice personality. Hit two birds with one stone. You up for some fun? Cheap charlie.

http://www.italki.com/entry/587713 Find out here.