Boa won't poo

I was at the petstore picking up some stuff for my rats and I started talking to my friend who works there. She says her boyfriend's boa normally defecates 2-3 days after a feeding but the boa has not defecated for 3 weeks now. They have tried warm soaks but nothing is helping. Any advice I can pass onto her when I go back there in an hour or two?

i wouldnt worry about it, ive heard stories on here of bloods going like 6 months without taking a dump and then bam one day a giant dog sized LOG!!

Yep, nothing to worry about. My BCI defecates once every couple of months and has ever since he was just a worm (he's now about 7 feet).

Yet another reason why snakes make such great pets. :P

Yeah, no major problem.

We have Boas that poo every week, we have others that poo only once every 6 weeks.