A pulled-pork sandwich is where one man inserts his penis in another man's rectum. The pulled-pork refers to the penis (which at one point or another may have been pulled to aid in getting an erection) while the "buns" are referring to the pulled-pork sandwich recipient's buttocks. It is essentially a euphemism for anal sex.
I totally bent Colin over and made him a pulled-pork sandwich. Oh yeah, pulled-pork sandwich.
A pulled pork sandwich is when a girls pussy resembles pulled pork and her camel toe resembles two sesame seed buns hints the name pulled pork sandwich. It is even more so like a pulled pork sandwich if she is having her period and the blood would resemble the BBQ sauce.
"dude I asked her for a pic and she sent me a pic of her pulled pork sandwich."
"so me and my girl were doing 69 and right then is when I realized she had a pulled pork sandwich then she released blood from her pussy into my mouth."