The simple answer is "No!" and no explanation given... You don't have to explain why you don't want to lend your iPad, your phone, your calculator, or whatever. This "friend" is not asking "Can I see your iPad just a minute?". But he is saying "give me your iPad cause i'm too cheap to get one". It's a bit harsh, but really close to reality...
- saying "Yes, but be careful... " will simply say to others that you are not confident, and they can ask you anything...
- saying "No, because... You know.. Hope you understand..." will simply say that you are not confident, and trying to avoid problems...
- saying "No!". Short and sweet, will show your confidence, give back the guilty felling on the other person, and put them in a dominated state.
This person is not your spouse, your child, a relative... It's just a colleague that happens to share some interest with you in the best case.
And if he comes back to ask, just give him back the monkey... Here's a situation:
Him: can I play with your iPad?
You: No!
Him: Why? I will be careful...
You: You should get your own...
Him: I don't have that kind of money...
You: So...?
Him: please, pretty please...
You: you're pathetic!
Short answer, giving back the monkey...
VicoPad addict!