An item you cannot recall the name of. Syn- thingamajigger can also be shortened to dilly or dills
"Hey have you seen a dillywhopper? I have got to put my hair up and I can't find any anywhere!" "Umm...no" "come on! I just bought a brand new card of hair dills"
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!