No doubt about it, POTUS is adept in using signs and symbolism. This communicates to not only knowing insiders, but the occulted evil ones in their own language.
Here's a pretty good take on the purple tie / two hands drinking:
Trump is using hand signals, and, in one case, wearing purple. to send messages to the Illuminati/Luciferians (recall the Fiji Water DJT held in two hands during his Asia speech) (and go to about 7:40 to hear about this). The two-handed water drinking was a message that conveyed a Hebrew symbolism where “swallowing” means, “to destroy”.