Smegalumps are the small white spots on the helmet of the penis when one peals back the foreskin. This is due to someone not cleaning themselves properly or not having a good standard of hygiene.
To use in a sentence - You dirty little smegalump or you stupid smeghead!!
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!