It's important.  Also, you might get to hear a conversation similar to the one I overheard which went as follows:

Girl behind me:  Would you rather have two big spiders or like hundreds of little ones?
Her SO:  Two big ones. 
GBM:  Well, I didn't mean hundreds of little ones.  I meant like 70.
HSO:  Two big ones. 
GBM:  Oh.  I'd rather have little ones.  They have smaller mouths.

For the record, I vote no spiders.  At least not in my house.