IBLS, otherwise referred to as Instant Boner Loss.
IBL is the physical phenomenon which occurs whenever something completely disturbing or non sexual is brought up during intimate times.
"Dude, why'd you call me last night? I was in bed with Stacy! Total IBL!"
New acronym meaning "I belly-laughed," or "I'm belly-laughing," depending on the tense in which it is used. IBL is intended to be used in place of LOL and should only be used when it is truly meant by the sender, in the literal sense, as LOL seems to have lost it's credibility through relentless digital repetition. Therefor I humbly present to you, "IBL."
My cousin forwarded me an internet meme, demanding the revocation of my mancard; and IBL. (past tense: I belly-laughed.)
My friend suggested that I look up a sexually explicit youtube video. I replied: "I will dude. When I'm not with gamgams." He replied: "IBL" (present tense: I'm belly-laughing.)