How to “double pop” on different strings?
I know it’s uncommon but I have situation in which there’s a slap and two fast pops on different strings (D - G) followed by another slap but I can’t figure out an efficient way to play it. It seems to me that it’s impossible to “teeter-toter” and I think using the finger muscles to a certain degree is needed.
I think the notation is wrong as pop happens on the D and G string, not A and D string, but for reference:
And here is how the one who composed the riff plays it (timestamped at the slow demonstration):
@JoshFossgreen @Gio and let’s also get @Gabriel1 in here, taking him up on the offer to help with any questions 
Interested in any information on efficient technique.
Of course any valuable input is welcome, even if you weren’t in the list of tagged people.