Pun 1: Why did the proton go to the party?
Because it was a POSITIVE experience!
Pun 2: Why did the electron go to the doctor?
Because it was feeling a little negative!
Pun 3: Why did the quark get kicked out of the bar?
Because it was a QUARK of a situation!
Pun 4: Why did the neutrino go to the party?
Because it was a NEUTRAL presence!