Trebbing means: This is the gerund form for To Treb. Trebbing means that Trebbing uses Alex Trebek for recreational purposes. You may experience side effects such as Canadian heritage and smart knowledge. Others street names are: Trob. Bacon n’ Trebs. Fat Treb. Hot Treb. Trebdiculous. Trebdoor. Trebpipulous. Trebdapadon. (in Community Dictionary, added by Labyrinth)