Procure por qualquer palavra, como bukkake:
 
1.
To get an assassination medal in halo 3 by meleeing in the back. Commonly used by tsquared captain of the halo 3 team Str8 Rippin
Tsquared: Give em' the back smack baby!
por BoweTheShow 22 de Junho de 2009
 
2.
action verb: To strike another person because they have just pissed you off. One can backsmack by thought, word, or deed.
Steve: "Did she just cut you off?"
John: "Yeah, I 'd like to backsmack her!"
por Lexie 1912 19 de Setembro de 2008
 
3.
To violently slap someone on the back.
"Dude, it hurts so bad!"

"Take that back smack bitch!"

"Did you see Todd totally get fucked up, that was the worst back smack I have ever seen!"
por Tango09 31 de Março de 2010
 
4.
To talk about someone behind their back
Brittany:"wow she looks really ugly"
Jessica:"sorry I don't backsmack"
por Backsmack 12 de Setembro de 2014