Jizz

I'd say this takes the cake for Portal R34.

rule34

dat ass? (f) and more portal! :D

gonewild

Thinking with portals

PortalPorn, u_Vmonsterlive

Last chance to tap that ass before she gets sucked through the time-space portal. Just sayin'.

Amateur, RealGirls

NSFW Portal

Ingress

Looks like Twilight isn't the only one going through the portal.... [Equestria Girls]

mylittlepony

Thinking with portals

gfur

/r/cosplaygirls didn't like this version of Chell from Portal's makeup, I think it's ace

MakeUpFetish

Me, a level 4, successfully defending a surprise attack on my L3 portal from the regional #3 L8 enemy agent

Ingress

Getting ready to settle in [F]or an afternoon of Portal...and maybe some joystick action.

GoneWildPlus

The Void-Casters portal is still open above Ooo.

adventuretime

The Portal

milf, hawtjg

Yukari thinking with portals [Softcore]

Touhou_NSFW

BioShag Trinity: Portal Pooch [StudioFow]

HentaiBeast

Access portal

BonerMaterial, madeforsin

Playing with Portals

futanari, futanari_Comics

"Movie Night", a work-in-progress piece by 'Shadowfaps' [F/F] [human/human] [Oral] [Willing] [Soft] [Feet first] [Internal view] [Same size] [Public nudity] [Sex] - see comments for Eka's portal link

Vore

Stretched pink portal

asshole

Zatanna thinking with Portals

superheroporn

A portal has been opened to discover that Elizabeth is in a bit of trouble (RenX) [Bioshock]

rule34, BioshockPorn

Thinking With Portals [Nude]

Touhou_NSFW

Any Portal fans out there????✨

a_little_naughty

Looking out the portal

JeffMilton

Portable fuck portals

DarkBitsNPieces, spread_eagle_latinas

This is why we need portals!

GoneMild

*Now* you're masturbating with portals! [d]

yiff

[WIP] Portal glory pleasure

PixelArtNSFW

Glory portal starring Fujiko

PixelArtNSFW, PixelArt

(OC) Glados with some extra "cake" [Portal]

rule34

Sunset Shimmer posing atop the portal entrance (jay156) [My Little Pony: Equestria Girls]

rule34, rule34feet, rule34pinups, FapFap, PonyFeet, cloppinups, ClopClop

Let's go to the portal and make history.

peachesforpresident

My little sexy blue portal

cat2mouse, PetiteGoneWild

Her eyes were portals into a dimension of pure desire

SFandFslavegirls, u_Shlupi1

Wraiths Fun with Portals ft Nathan Drake (ShamelessDeeg) [Apex Legends/Uncharted]

rule34

Interdimensional Portals (M Human -> F Pegasus Mid-TF; MTF/TGTF Twinning) by TF-Sential

transformation

Thank you for participating in this Aperture Science Holstaur enrichment activity (DevilBlueDragon) [Portal]

MechanicalSluts

You will never suck your own dick with the assistance of a portal

ImpossibleHentai

[Furry] You will never misplace a portal to your pussy and then have the stranger who found it remotely fuck you in public

ImpossibleHentai

You will never use your hair portals to surround yourself with disembodied boobs

ImpossibleHentai

Take a peek into my portal [F] ??

altgonewild

Alexandra Nash by Portal CPT

NSFWfashion, FitModels

The yawning portal

GuysFromBehind, NSFW_GAY, FemboyMD123, boypussy, CuteGuyButts

Playing with portals

deepthroathentai, HookedUpHentai

Lara is dragged in a mysterious portal (The Rope Dude) [Tomb Raider & Final Fantasy 7]

SFMCompileClub, rule34, hentaibondage, 3DPorncraft, laracroftNSFW

Chell (KasmaR34) [Portal]

rule34, valveporn, PortalPorn, rule34pinups, 3DPorncraft

Made a new version of my first ever cosplay! Happy birthday to Portal 2 ??

ShodansServer, CosplayLewd, cosplayonoff, InkedCosplay, nsfwcosplay

Chell being a good test subject (throat) [Portal]

PortalPorn, rule34, u_heckmybutt69

Alyx Vance and Chell Tribbing! (Portal, Half-Life 2) [SiegeBabez, OC]

rule34

Peaking through a Portal

ecchi