Me too, I cooked for a little under 10 years never broke $14 an hour (east coast near philly this was 3 years ago) while a 19 year old waitress would complain that they only made $100 for 3 hours of work.
Because they knew that the night they made $100 in 3 hours was the night they would receive the largest tips. The other nights of the week would be even less if not a fraction of it.