Sucking a big dick can be daunting for some guys, particularly if they're not experienced with having sex with well-hung men. It takes passion and determination. Men with big dicks know that their cocks are not easy to suck, and most of us are patient as long as the guy is trying and committed to perfecting the technique.  Speaking for myself, I pride myself on giving as good as I get, so I am skilled at sucking a big dick like I like having mine sucked.  Reciprocity is the Clan of Men Way.