Get the great-great-great-grandpamug. someone does something, to make you have to tell them to quit or need someones assistance, by using the safe word. No grandpa
by Mr. Bojangles March 13, 2019
Get the no grandpamug. 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. 
