Redlemon

Very nice.

I was curious about the possible mechanics of this, so I searched and found the following. I'll link, so it doesn't NSFW the thread.
Image 526466: Portal

Further related:
Image 39844: Chell Portal Trystalk Weighted_Companion_Cube valve
Image 275459: Chell Portal
Image 178248: Alyx_Vance Chell Crossover Half-Life_2 Half-life Legio Portal Weighted_Companion_Cube

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I can't read your signature. Sorry.