I've always leaked a lot of precum when i'm turned on. Not buckets and buckets of it, but more than enough to lubricate the head and shaft with. It's a really great lube since it doesn't dry out like artificial lubes or saliva does. Artificial lubes are designed to simulate the secretions of the cowper's gland, anyways. At the risk of sounding corny as hell: Ain't nothing like the real thing, baby.