Lul

Laughing Under Limits: (Can be used as a threat when used in all capitals)
Lul: (Verb) 1. Can be used as an expression in those awkward situations when your kidnapper makes an extremely lame joke but you still have to laugh, for you fear... however an awkward chuckle may suffice.
2. Can be used when your friend says something but you are deaf so you Lul. (She just told you that your dog died).
Lul:(Noun) 1. That awkward laughter that you must contain because it is not the time nor the place in which you can laugh. I.e. You are giving your valedictorian speech but your brother in the front row is being ridiculous, you cannot laugh but you also cannot not laugh.

2. Forced awkward laughter See Lul:(Verb 2)

Person 1: Sorry I didn't mean to say that.
Person 2: Lul... you're fine (extremely awkward).