titter

             titter (v.) – to laugh nervously or self-consciously

for your edification:  Say this word out loud.  Titter.  Heh heh.  Heh heh.  It sounded  like you just said “tit her.”  Heh heh.  Heh.  Sorry I’m laughing so nervously and/or self-consciously.  It’s just that you just said “titter.”  Heh heh.  I’m embarrassed for you, and a little for me, too.  You just said titter.  Did I mention just how much that sounds just like “tit her”? It freaking does!   That totally makes me titter.  Heh heh.

Examplification – Larry:  Hey, man.  Why are you sitting outside the principal’s office?

Skinny Jim:  It’s not my fault.  Mrs. Womack totally set me up.  She kept talking about some dude tittering in this stupid story we’re reading.

Larry:  It’s a funny word.  Were you embarrassed or something and you started laughing nervously or self-consciously?

Skinny Jim:  No.   Why?  I got in trouble for asking if I could grab Cheryl Lampkins’ titters.

Larry:  Gotcha.