I did this workout last week, and it absolutely murdered my biceps. You start by doing a very strict light barbell preacher curl for lots of repetitions. This will prime the bicep into mobilization. Immediately after finishing the preacher curl set, grab a heavy pair of dumbbells and get them up as many times as you can using slightly loose form (swinging).
Superset: 3 sets
Preacher curls (light) X 20
Standing alternating dumbbell curls (heavy, loose form) X AMRAP
Stretch the biceps aggressively in between supersets while they are pumped.
Try it and let me know what you think on my facebook page: https://www.facebook.com/profile.php?id=9027228