Who messes with squirt tops? Get yourself one of these. It's the only way! In no time at all, you'll also be passing up pee stops and letting it go on the bike like the hardcore tri people do.
You also may ram that big a$$ straw down the back of your throat when you hit a bump. At least you'll be aero when you do it.
https://university.trisports.com/201...drink-systems/