None as usual... and they most likely didn't understand them either.
They always bomb the punchline!
Punjabi-ng.
To really understand acids and bases, you need a pHd.
Ten. (Shame this one doesn't work too well for reddit - the funniest part of this joke is the third punchline enjoying people struggle to understand what the hell you're talking about.)
Boo bae! (Read aloud please)
Read the label.
2: I'm a big fan.