It is the only word that is an adjective, a noun, a verb, a conjuction, AND an adverb.
God, you're such a triggle!
What the triggle is this trigglin' triggle?!
the assailant makes "the claw" formation with his/her hands and proceeds to assail the victim by grappling and rubbing the tips of their crooked fingers vigorously into their sides while making "rawr rawr rawr" or similar animal sounds.
note that the occurrence of biting will depend on the presumed level of familiarity between the parties involved or if it's a cultural thing. Body parts that may be seized by teeth include face, neck, shoulders, boobs or any limbs thrown up by the victim in defence.
origins: like a huggle, but worse. contracted/mashed up form of the words 'tickle' or 'tackle' and 'aggression' that pops up when people are too excited to properly think through what they are saying.
2. My dog triggled me when I got home with the groceries. I still can't tell if she really likes me or was only going for the food.