He likens a bank account to a leaky bucket.

My device, several years old now, loses battery power like a leaky bucket.

The leaky bucket algorithm as a meter can also be used in a leaky bucket counter to measure the rate of random or stochastic processes.

But to fix the leaky bucket, he needs straw.

In fact both are effectively the same, i.e. implementations of both the leaky bucket and token bucket, as these are the same basic algorithm described differently.