Seems Twi got carried away nomming a whole bunch of preys X3  
What can I say? She’s a very hungry hungry pone that eats ponies like she eats hayburgers.
 
Anyways. The idea behind this pic is that everytime Twi noms a prey, she not only gains weight but she also gets bigger. I got this idea from a friend and from the Season 4 finale where Tirek stole pony’s magic and got bigger and stronger. Twi took inspiration from that and got carried away :P
 
P.S. All nommed ponies would eventually get out in one piece…..In either exit XP