Ladies, this is not PC.
This is a joke I tell from time to time, but you really have to use your physical expressions to make it work, I'll use a GIF and you imagination instead of myself in person. Bear with me:
This older dude, pretty much broke and a little bit drunk after a night of drinking with his friends, feels like he wants to get laid, so he stumbles into the local brothel late into the night. As the young ladies parade in front of him in their best lace, he's drooling from the sight of these sweet and pure looking twenty year old nubiles in front of him, he tells the madam:
"madam, I'd like to know what kind of pleasure I can get with what I have with me" and he pulls out a ratty tenner out of his back pocket
the madam sighs, and replies: "well, dear sir, with those funds we can only offer a penguin style blowjob!"
and sir replies: "I've never had that but it sounds exotic, what does that entail?"
and madam says: "you'll enjoy it plenty, just cough up the dough and get ready, lean against that wall right there and someone will be right here"
The older dude does just that, he starts fantasizing with this 20 year old youngster but instead arrives what could well be her grandmother, and promptly tells him "get your trousers down"
As he does, she kneels, pulls out her teeth and proficiently goes to work! He is marveled and thinking "man, she's not what I was dreaming about but in fact there is no substitute for experience" and after a couple of minutes he lets out a sigh and a whisper:
"please don't stop, I'm about to finish" and right as he says that she stops and starts walking away, he chases her with his pants down by his ankles like so:
and she says: "there you go, penguin style BJ"