A senior-ish colleague

(he's got a C in his title but he's a IT guy) 


has just replied to something 


"lol. KK"




Have a word


making a leap here but consider telling him to dial down his tik tok whilst you’re about it 

I have no idea what KK stands for.  Does it mean he is a bit racist but not into joining clubs?

I assume what he meant was

Dear Sirs,

lol kk

Yours faithfully etc


Perhaps you may be overthinking this.