Well so far nobody has had an immediate reaction to this particular drink, even Lisa's growth happened "after a while". While I was bummed to not open to a sequence today I'd imagine it's just being built up. Seems likely the drink was shared too, based off the dialogue.
ktc
2020-04-04 02:11:55 +0000 UTC
If the growth happened off stage, I'm gonna be sad :(
TK
2020-04-04 02:03:38 +0000 UTC
Exactly! You gotta think about people's health when spiking their drinks.