look up any word, like bangarang:
 
1.
An orgasm so scintillatingly pleasurable that one's back is physically bent with passionate ecstasy.
Sydney gave Nick a backbender last week and he almost broke her bed.
by letigre469 November 30, 2011
 
2.
when a male is so good in bed a woman will do anything he asks
last night i was with the greatest back bender ever.
by pan and lil c April 04, 2006