During a time of sexual intercourse, the male takes the time to pack the female's vagina full of fecal matter (excrement may be collected from either party) and then continues to insert his penis in the now shit-filled pussy.
Bob: Hey Baby lets do a Colombian Sandsmacker
Jill: What's that?
Bob: I'm 'gunna shit in your vagina and fuck it.
Jill: What's that?
Bob: I'm 'gunna shit in your vagina and fuck it.
by Dr Sazerac September 4, 2010