The lovely sex advisors of Nerve.com are back! Amassing knowledge from years of counseling the sexually curious and courageous, Em and Lo now offer this essential guide to playing the field.

With over 350 hilarious alphabetically listed entries and saucy illustrations, Em & Lo's Rec Sex covers all the bases of free love—B is for booty call, E is for equal opportunity objectification, F is for friends with benefits, S is for STDs, Z is for... (well, no, that would give away the ending).

At long last, here are answers to age old questions like, How do I know whether I'm dating or just hooking up? What's the difference between comfort sex and a mercy fuck? Would a true wingman ever engage in cockblocking? When does a booty call become an umfriend? And most importantly, can you do-over a play-d'oh? Em and Lo define the terms, classify the information, and generally shed light on all the naughty things you do. Armed with Em & Lo's Rec Sex you'll never again have to ponder: If I improve my playdar, can a cuddle party lead to some dry humping?