We always go head to head.
I have butterflies in my stomach.
It's on the tip of my tongue.
We see eye to eye.
Two heads are better than one.
I gave an arm and a leg.
I have time on my hands.
I am just pulling your leg.
I have nothing I must do.
I am telling you something that isn't true as a way of joking with you.
I paid a lot of money.
Two people working together have a better chance to solve a problem than one person working alone,
We oppose each other in competition.
I am very nervous or frightened about something.
We agree with each other.
I am about to say something if I can remember it.
