I can handle pain.
I can take more pain than anyone.
I have a high tolerance for pain.
I have a high tolerance for pain - both physical and mental.
If you feel pain, you have to make up your mind whether you can play with it or not.
I think I have got a decent pain threshold.
All pain is either severe or slight, if slight, it is easily endured; if severe, it will without doubt be brief.
I don't feel pain like most people.
I sometimes stop and wonder if I have a superhumanly high pain threshold and I just don't know it... But then I stub my toe and think probably not.
