I want to compare sizes and masturbate with my friend but I don't know how to ask him. any advice?
just be upfront with him
Just ask him then massage his balls you will both get a hard on
Has he got a big penis?Ask him if he wants you to give him a blow job?
Tell him your size on hard,ask him if he wants to see your erect penis
How old is your friend?
Just get naked with him ,and slowly just jerk him off till you both cum