Some annoying/ random stuff which people have said to me in the past i.e AGES ago that just won't go away...I forget other stuff so easily...but why do these phrases just...stick like chewing gum to hair?

"That's exactly what my mom said to me"
"That's what my dad said"
"Being careless isn't an excuse, so you drive a car and kill someone on the road...can you say you're careless?"