(latin- totalus: very, bonus: a large piece of marble in a cylindrical shape) adv. expressing great enthusiasm or approval. Usually said with an accent on the TOEtally BoneAH
A grandpa boner is a dirty filthy, fat, ugly often bald old man of 60 years of age or older typically found in south east Asia with a late teens to early twenties Asian escort with him.
Gross, look at that grandpa boner over there with that 17 year old girl. He has to be at least triple her age, triple her weight and triple her dimensions in every direction.
When a male engaged in vigorous anal sex breaks his dick inside said anus. Upon the breaking (and after all the anal pressure) the person receiving the anal sex becomes incapable of containing themselves and releases their fecal matter all over the broken penis. Therefore, making it a "Rusty Turn Boner."