How can I give him an erection?

My guy friend has strong feelings for me and he’s always giving me this awkward side hug and my friend said “ if he gives you a real hug he will get hard”. So me being me and not listening I hugged him the right way and he stopped hugging me and put his hands in his pockets right after. Later after that he told my friend he got a semi erection and was almost their to getting a full erection, ( i don’t know why he did that I think it was to save the situation from being awkward) but anyway I didn’t notice it at all and he said it was because he had his hands in his pockets. I just want to know how to give him a full erection. Got any tips?
How can I give him an erection?
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