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1.
The act of getting a hand job in a hot tub
Yo, did you see Greg and Jenny in the hot tub? I totally think she was giving him a tubjob.
by thecooldude92 March 10, 2012
 
2.
when you receive oral sex in any sort of bathing tub (hot, bath,etc.).
Bro, chilling in the hot tube last night turned into her giving me a sweet ass Tubjob.
by Xavier Q. Honey Badger Esq.III August 03, 2011