These are several graphics created by Twitter user Fukublog showing the size of the original Godzilla in modern day Tokyo. As you can see, even at 50-meters tall, he looks pretty tiny. The most recent incarnation of Godzilla from Shin Godzilla measures 118.5-meters tall, so more than double this. The monster in my pants? "Pikachu?" No, the other monster in my pants. "Your penis." It would make Tokyo look like a model railroad village.
Thanks to Bri, who agrees it's only a matter of time till they make Godzilla so big he has to duck to keep his head in the atmosphere.