Kagan filched plenty
from me over the years. I can’t even count how many bullets I lent him. But was he there when I
needed someone to stand up for me? No.
GuantanamoGeorge
It's a bit odd, after complaining about someone stealing from you, to say you lent him things instead of giving examples of what he stole. It's also not that usual to lend someone bullets. However "lending bullets" is not an idiom so apparently it just means he lent him bullets.
Anonymous
Its literal. The other man runs out and asks for bullets, but never gives anything back. He's a taker.
Anonymous
Well filched means pilfer or steal something small. So I think he literally means giving him bullets.
Anonymous
In that story it seems to mean real bullets.. Does the story involve the sort of person who uses a gun?
d_r_siva
"Bullet", another name for the adult toy "love egg"
https://en.wikipedia.org/wiki/Bullet_(disambiguation)