1 definition by Sexy;)

When a guy spits on a girls back in bed so she think he cum on her and when she turn around he cum in her face
Hannah: so u guys did it last night
Lauren: ya but he freakin backhammered me!
Hannah: oh that's disgusting!
Lauren: I know! Who even thought of backhammer?
by Sexy;) June 29, 2011
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