If there are arms suddenly about your shoulders, well, he's to blame. Sokka is simply unable to resist the hug, okay, we just had a really hard lesson in things keeping Suki out of hugging distance and therefore, all hugs will be taken when appropriate proximity is available.

"This-- this is not where I thought we were going." His arms tighten. "I miiiiight have to work on my rescuing skills. Blame Zuko."