bowl-locked is when you are taking a dump on the toilet and you feel like you still have some left in the tank, when in reality, your bowels are emmpty. this can typically last anywhere from a few seconds up to a couple minutes or more.
dude i had some mexican food last night and k was bowl-locked all morning the next day.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!