Besides its well-known meaning, "an automobile that has been rebuilt or modified to increase its speed and acceleration", "hot rod" also means a person who drives a really cool car but who is too ostentatious.
From "10 Things I Hate About You":
Walter Stratford: I know who you wanna bend the rules for. It's that hot-rod Joey.
Bianca: What's a hot rod?
A modified car often based on a 30s-50s Chevrolet or Ford (mostly Ford) that is modified with characteristic visual upgrades (wide tires, exhaust pipes etc)
I was riding in a hot rod with Billy last night.
The act of inserting a heated curling iron into the rectum or bodily orifice of choice
I gave my husband a hot rod last night and he said he has never felt like that in his life
Getting your leg peed on in the shower
Teresa loves a warm hot rod in the shower. Was it accidental? Probably not.
Hot rod = peeing on someone's leg, hopefully in the shower
Sticking a rod in the fire then plunging it feeling her vagina and let her pussy juice Cool it down
I can't wait to hot rod Julia and her roast beef vag
When a girl give a blowjob then takes a shot of hot sauce afterward.
“Hey bro guess what”
Bro- “What?”
“I got a hot rod from a chick last night!”
Bro- “No WAY!”
Using warm monistat cream applied to the penis to treat a woman's yeast infection by having intercourse with her.
It was a bit chilly in the house and the wife was feeling frisky so I decided to give her the hot banana bread.