When a grandpa gives you head (no dentures) in the restaurant parking lot, and then afterward you get a Werther's Original from em.
"Dude, did you see that chick getting a Backseat Grandpa?" "No, hurry up the restaurant just texted me our table is ready."
by JohnnyFibblethips January 20, 2025
Get the Backseat Grandpamug. grandpa father is defined as: because my grandpa is my father im mentally retarded, but still more intelligent than every fuckboy that is reading this now
by datboroboy January 15, 2017
Get the grandpa fathermug. grandpas dick can not get hard any more and grandma is getting pissed off so grandpa takes Viagra to get it hard tell your significant other this if they have erectile dysfunction
by WalmartIsNOToverrated December 24, 2022
Get the grandpa cant get it upmug. by Doctor Allen December 15, 2017
Get the frosty grandpamug. (weather grandma for a woman): an offensive term for a person who is always quetching about, as the name suggests, the weather.
I decided to coin the term weather grandpa based on my personal observation that it's mostly old grumpy grandmas and grandpas that quetch about the weather. Not only that,but everybody hates a weather grandpa especially when the person doing the complaining doesn't understand that they can't do a rat's ass about the weather.
by Sexydimma February 5, 2017
Get the weather grandpamug. 
