Common Courtesy

Play by the rules. If a friend can't send a problem:
1. Take in the beta
2. Ask to try
3. FALL.

This is a courtesy fall. It is much appreciated. After this point you can send at will.

Note the fake smile. Gloating doesn't help anyone

If you don't want to blow the flash attempt...

1. Approach the problem,
2. Just before trying, back off. "Can you show me that beta again?".
3. Friend struggles again
4. Say "Thanks" and proceed to send.

Exclusions:

1. The dude at the gym on an "Adventure" date. No need for courtesy.

2. If falling may result in injury, use the second method.