That doesn't mean try to suck. It means to try and possibly fail -- to take risks. To dare -- and maybe fall flat on your face, with a community of friends to say "Hey, that sucked! But nice try!" From the Theater of Ted, www.daretosuck.com. All credit for this goes to the respective persons who created this, not me.
find a dick to suck to tell someone to find a dick and stuff their yap trap with a dick so you dont have to hear them a not so nice profane way to tell someone to shutup