Nicotine can sneak up on you regardless of your tolerance level. The Frigate's pretty mild, but it doesn't mean it can't sneak up behind you and kick you in the back of the knees to bring you down to the ground and then stomp on you. Sounds like the back to back bowls on an empty stomach is what made you vulnerable. A heavy cadence could help speed that along as well. Having something to eat before any bowl regardless of strength is some of the best advise you can be given, and it's what I normally do myself.