Attempt

Two chemists walk into a bar. The first says, "Can I have a glass of H2O?" The second chemist says, "Can I have a glass of water, too?" The first chemist breaks down in tears — his assassination attempt has failed.
(He didn't say H2O2)
Why did the football coach attempt to destroy the vending machine?
Cuz it wouldn't give him his quarterback.
What do you call it when you try to woo someone with 50% of a Valentine?
A halfhearted attempt.
"As has often been noted, physics is to math what lovemaking is to masturbation."

Student : "So you're saying both fields are good, but without an attempt to understand the universe, the search for deeper mathematical truth is empty?"

Professor : "I'm saying you'll spend most of undergrad doing math."