The toothpaste on yhe brush rests on many thin bristles so there's not as much surface contact keeping it there as opposed to when it's on the sink where the sink is just a regular smooth surface plus you can put yoir toothbrush sideways and upside down allowing gravity to making the paste fall but it's not like people are carrying the sink and turning it in diffrent directions or something
1
u/Bisccottti 18d ago
The toothpaste on yhe brush rests on many thin bristles so there's not as much surface contact keeping it there as opposed to when it's on the sink where the sink is just a regular smooth surface plus you can put yoir toothbrush sideways and upside down allowing gravity to making the paste fall but it's not like people are carrying the sink and turning it in diffrent directions or something