Make a pun about the number 1? Ok fine, but only if we half two.
Getting hooked on math puzzles is somewhat problem addict.
Do algebra teachers furnish their bedrooms with orthogonal mattresses?
In Sweden, they draw a lot of Sven diagrams.
How did ancient bar-goers settle their tabs?
Can a mathematician marry his cosin?
Do mathematicians in Sweden use a lot of Sven diagrams?
There are four sides to every car crash. That’s what they call a wrecktangle
Geometer punks love graph-iti.
When geometers get a loan, do they need a cosiner?